1. Biology!!

    Darwin is considered the "father of evolutionary biology." Four of his contributions to the field of evolutionary biology are listed below. The nonconstancy of species. Branching evolution, which impleies the common descent of all species. occurrence of

    asked by Mary on January 16, 2011
  2. biology

    for the hardy-weinberg equation, is p always for the dominant allele and q recessive? is the value of p always greater than q?

    asked by barb on February 24, 2010
  3. Math

    1. Cystic fibrosis (CF), a life-threatening lung disease, is caused from the inheritance of a recessive allele from both parents for the CFTR gene. In order for this disease to manifest itself, one needs to be homozygous recessive for this autosomal gene.

    asked by Bella on October 26, 2015
  4. Hardy Weinberg: Biology

    Can someone explain how to answer these questions given the different variables given? I have a test soon. Dr. Martin Brenner and his team have built a space ship which can travel at the speed of light (186,000 miles per second) and travel to parallel

    asked by Allie on November 14, 2017
  5. Biology

    Why is the Hardy-Weinberg Theorem useful for studying evolutionary change? What are the assumptions of this model? How does it work (in other words, describe the procedure which is used and how you figure out genotype frequencies)?

    asked by Sarah on October 8, 2015
  6. Biology

    In a population of Mendel's garden peas, the frequency of green-flowered plants (genotype aa) is 49%. The population is in Hardy-Weinberg equilibrium. What are the frequencies of the AA and Aa genotypes? I got 9% AA, 42% Aa as my answer, is this correct?

    asked by Fay on October 4, 2016
  7. biology

    One in every 685 children born in the chicoutimi area of quebec province has tyrosinemia. It is cause by having two copies of the receissive allele. Under the assumptions of Hardy-Weinberg equilibrium, calculate the value of q required to produce this

    asked by Fred on September 11, 2012
  8. Biology

    A biologist found that 20% of a population of bats are brown, which is recessive. assuming the population shows Hardy-Weinberg equilibrium, determine the genotype and the allele frequencies of the population?

    asked by Sarah on March 11, 2017
  9. Biology (Please Help: Urgent)

    The Hardy-Weinberg formulas allow scientists to determine whether evolution has occurred. Any changes in the gene frequencies in the population over time can be detected. The law essentially states that if no evolution is occurring, then an equilibrium of

    asked by Joy on August 30, 2013
  10. Biology

    DNA was collected from 100 people and subjected to a restriction digest with BamHI. These samples were then analyzed using Stouthern blots. Three different patterns of hybridization were seen on the blots: 56 samples showed a single band of 6.3kb, 6

    asked by Tammy on December 7, 2006
  11. biology

    A population shows 81% have the dominant phenotype. If Hardy-Weinberg conditions are met, what will be the genotypic frequencies in the next generation? ______Homozygous dominant _____ Heterozygous ______Homozygous recessive

    asked by rod on April 1, 2008
  12. Biology Honors

    Hardy-Weinberg: Within a population of birds, 21 percent of them display the recessive phenotype for a particular trait. What are the allele frequencies for this trait assuming the population is in genetic equilibrium? I'm absolutely confused on this ;l

    asked by Edward on March 27, 2016
  13. Biology

    Could you help me out with this question. I have read over the lesson and still feel like an idiot when it comes down this question. I understand hardy Weinberg equation but not this. Please help me understand this question. Scientists observe a newly

    asked by HELP on October 9, 2018
  14. genetics

    In a village with 4300 people, 1 in 90 males has a condition called 5-ARD that causes men to be pseudo-hermaphroditic. What is the frequency of autosomal recessive 5-ARD allele in this village, assuming Hardy-Weinberg equilibrium?

    asked by kat on October 1, 2012
  15. biology

    21% of a population is homozygous dominant, 49% are heterozygous and 29% are homozygous recessive. if the Hardy-Weinberg Law applies, what percentage of the next generation is predicted to be homozygous recessive?

    asked by Zoe on January 4, 2011
  16. Business Law

    The furniture salesperson tells Paul Weinberg that the table he is admiring is solid cherry. Weinberg purchases the table, then discovers that it is not cherry but another wood stained to look like cherry. Does Weinberg have any legal resources? I said yes

    asked by Melissa on July 28, 2014
  17. Genetics

    A certain form of albinism in humans is recessive and autosomal. Assume that 1% of the individuals in a given population are albino. Assuming that the population is in Hardy-Weinberg equilibrium, what percentage of the individuals in this population is

    asked by Anon on March 15, 2012
  18. Genetics

    A certain form of albinism in humans is recessive and autosomal. Assume that 1% of the individuals in a given population are albino. Assuming that the population is in Hardy-Weinberg equilibrium, what percentage of the individuals in this population is

    asked by Anon on March 18, 2012
  19. biology

    In a population with two alleles, B and b, and the allele frequency of b is 0.4. Calculate the allele frequency of heterozygotes if the population is in Hardy–Weinberg equilibrium? Show your work. Thanks for any help in advance!

    asked by Rosie on August 1, 2013
  20. Biology 30

    In what size populations might you expect it to be relatively common for alleles to become fixed? Why? I think that larger populations would be more likely to have fixed alleles, since perfect Hardy-Weinberg equilibrium states that there will be no change

    asked by Erika on May 23, 2014
  21. Biology

    you are studying a single-gene locus with two alleles in a population that is in Hardy-Weinberg equilibrium. Examination of a large sample of individuals from the population reveals there are six times as many heterozygotes as there are homozygote

    asked by John on April 23, 2013
  22. Bio

    Hi there, could you please help me with the following questions: 1.) How does the Hardy-Weinberg provide a baseline for identifying how populations evolve, as a function of changes in their allele frequencies? 2.) Grey squirrels are predominate since they

    asked by Ira on June 1, 2010
  23. Biology

    Suppose in a breeding experiment, you combined 7,000 AA individuals and 3,000 aa individuals, and they mated randomly. After the first generation, what would be the value of p2 (p squared) ? of q2 (q squared)? of 2 pq? what would be the value after the

    asked by JJ on January 4, 2011
  24. Biology

    if the incidence of cystic fibrosis is 1 in 2500, what is the expected frequency of carriers for the CF allels? assume that this population is in Hardy-Weinberg equilibrium. I appreciate a hint to start this answering this problem. p^2 + 2pq + q^2 = 1 p +

    asked by Tammy on December 7, 2006
  25. biology

    In a population that is in Hardy–Weinberg equilibrium for two alleles, C and c, 16% of the population shows a recessive trait. Assuming C is dominant to c, state the percent of the population shows the dominant trait? Show your work. Thank you!

    asked by Jen on August 1, 2013
  26. Biology

    Populations are frequently NOT in equilibrium due to selection or other evolutionary forces. Imagine a population of 100 individuals. Forty-nine of the individuals are homozygous dominant for beady-eye gene, 9 are heterozygous and 42 are homozygous

    asked by Emma on September 18, 2010
  27. Science

    A newspaper story on AIDS reports that an allele (R) confers complete resistance to HIV when homozygous and that 1% of the human population is resistant (RR). The story also states that 20% of the population carries one copy of the resistance allele (i.e.,

    asked by MT on April 8, 2013
  28. AP Biology

    I got a question that comes from the 1990 released test #61 that I'm completley lost on 61. In a population that is in Hardy-Weinberg equilibrium, the frequency of a recessive allele for a certain hereditary trait is 0.20. What percentage of the

    asked by Kate on July 2, 2010
  29. Public High School AP Biology

    I got a question that comes from the 1990 released test #61 that I'm completley lost on 61. In a population that is in Hardy-Weinberg equilibrium, the frequency of a recessive allele for a certain hereditary trait is 0.20. What percentage of the

    asked by Kate on June 23, 2010
  30. Public High School AP Biology

    I got a question that comes from the 1990 released test #61 that I'm completley lost on 61. In a population that is in Hardy-Weinberg equilibrium, the frequency of a recessive allele for a certain hereditary trait is 0.20. What percentage of the

    asked by Kate on July 2, 2010
  31. biology

    1. A population which meets the hardy- weinberg requirements: a. Evolves b. is small and usually isolated c. has allele frequency in equilibrium d. changes genotypic distribution from generation to generation e. always has 75% A and 25% a allele

    asked by Nancy on April 30, 2009
  32. Biology

    Assuming that the conditions of the Hardy-Weinberg equilibrium are met, determine the genotype and phenotype frequencies in the second generation of a population containing 64% tasters and 36% nontasters q2 = _________ Tasters ____________ q =

    asked by cat on April 1, 2008
  33. biology

    In a laboratory population of diploid, sexually reproducing organisms a certain trait is determined by a single autosomal gene and is expressed as two phenotypes. A new population was created by crossing 102 pure–breeding (homozygous) dominant

    asked by penny on August 1, 2013
  34. ap biology

    we are looking at the Hardy weinberg equilibrium theory and we were given fifty problems to work over the break and even though i have answered most of them there is one that has be taken a long time because I am not sure if it can be solved. here is the

    asked by claudia on January 4, 2008
  35. science

    About 70% of the human population can taste the bitter chemical phenylthiocarbamide (PTC), which is found in foods like broccoli. The allele, T, for tasting PTC is dominant over the allele, t, for not tasting it. Calculate the allele frequencies using the

    asked by madison on November 10, 2012
  36. Biology! pleaseee helppp

    About 70% of the human population can taste the bitter chemical phenylthiocarbamide (PTC), which is found in foods like broccoli. The allele, T, for tasting PTC is dominant over the allele, t, for not tasting it. Calculate the allele frequencies using the

    asked by Madi on November 10, 2012
  37. genetics math

    2. Genotypes of leopard frogs from a population in central Kansas were determined for a locus (M) that encodes the enzyme malate dehydrogenase. The following numbers of genotypes were observed: Total sample studied = 107. Genotype Number M1M1 20 M1M2 45

    asked by Bella on October 26, 2015
  38. ART Check

    How would a visual effects designer working on an animated movie with human characters best use knowledge of biology? Knowledge of biology can help the designer to create accurate human features.**** Knowledge of biology can help the designer to create an

    asked by koolkid on April 22, 2015
  39. Biology

    Iwas woudnering if you could help me with this problem. The answer key says that the answer is D and I have no idea why. The chart, included in the link, reads off a value of about .5 for the G locus for the year 1980 Finding the percent heterozygous

    asked by Kate on July 4, 2010
  40. Ms. Sue Help me, please

    Hello, I was wondering if it was possible for you to assist me in having a science/biology teacher answer my question. It is called 12 Biology and I reposted as Biology Lab Banana DNA. My reason for this is that so many questions keep popping in, all in a

    asked by LC on April 2, 2008
  41. English

    1. He is absorbed in biology. 2. He is very interested in biology. 3. He is into biology. ----------------- Are they all the same in meaning?

    asked by rfvv on May 30, 2016
  42. Enriched science

    What is the goal of synthetic biology? A. The goal of synthetic biology is to mimic living cells B. The goal of Synthetic biology is to generate new tissues to replace damage tissues C. The goal of synthetic biology is to engineer living cells to perform

    asked by Rhyleigh on February 17, 2016
  43. math

    Laurel appears at Comedy Cafe at a random time between 1:00 and 2:00. Hardy turns up at a random time between 2:00 and 2:30. The probability that Laurel waits for no more than 40 minutes for Hardy can be expressed in the form m/n, where m and n are

    asked by sadness on February 9, 2018
  44. Biology

    In a population of jaguars, a gene with two alleles encodes the fur color. Allele B causes melanism (dark fur) and is dominant over allele b, which results in light colored fur. Suppose that there is a migration event, producing a population with 60% BB,

    asked by Joe on January 28, 2013
  45. Biology

    A population of animals has a dominant allele for dark-colored fur and a recessive allele for light-colored fur. If the population of animals is 100 and 12 members of the population have the light-colored fur, about what percentage of the population is

    asked by Jenny on April 27, 2011
  46. Biology

    You are studying a large population of claims of which 396 are pink (t) and 557 are Tan (T). Tan clams are completely dominant over pink clams. Calculate the following: 1. The frequencies of each allele. 2. The expected genotypic frequencies. 3. The number

    asked by Josh on February 8, 2013
  47. Biology

    Is 9th grade biology hard? Is it interesting...?? I love life science but I just wondering if 9th grade biology hard??? I'm taking biology next year.

    asked by Sarah on April 29, 2013
  48. AP BIOLOGY

    I have a quiz on genetics on friday in AP Biology and I would like some sites with good ap biology questions on them. I don't know any of them which I could go to.

    asked by Roger on December 3, 2008
  49. biology tutor on jiskha

    i post my biology questions here today and few days ago no teacher reply. there not any biology tutor on here?

    asked by Shreya on February 23, 2012
  50. maths

    In a class of 80 students, 53 study Art, 60 study Biology, 36 study Art and Biology, 34 study Art and Chemistry, 6 study Biology only and 18 study Biology but not Chemistry. Illustrate the information on a Venn diagram. Determine the number of students who

    asked by Kwame on September 20, 2016
  51. statistics

    1. Use the following information about a group of college students: Fifty percent are taking Algebra. Sixty percent are taking Biology. Thirty percent are taking both Biology and Algebra. A student from the group is selected at random, calculate the

    asked by Ahmad on September 19, 2011
  52. math

    A school has 63 students studying Physics, Chemistry and Biology. 33 study Physics, 25 Chemistry and 26 Biology. 10 study Physics and Chemistry, 9 study Biology and Chemistry while 8 study both Physics and Biology. Equal numbers study all three subjects as

    asked by ifi on December 25, 2012
  53. Biology

    Scientists observe a newly established population of sexually reproducing plants growing on the shore of a small island. An observable trait of the plant has two possible phenotypes. It is determined by a single gene, with the dominant allele having

    asked by Anne on October 3, 2012
  54. BIOLOGY

    Scientists observe a newly established population of sexually reproducing plants growing on the shore of a small island. An observable trait of the plant has two possible phenotypes. It is determined by a single gene, with the dominant allele having

    asked by batmo on October 2, 2012
  55. Math

    In a class of 100 students, 40 offer Biology and 10 offer Chemistry and Biology .10 offer Physics and Chemistry , and 30 offer Physic and Biology . Each student offer at least one of the three subjects. The number of students who offer Biology is equal to

    asked by Delson on June 9, 2016
  56. math

    Suppose there are 70 students in an examination with the students writing at least one of the subjects; Chemistry, Physics and Biology. Thirty(30) students offer Physics, 33 offer Chemistry and 40 offer biology, 10 students offer both Physics and

    asked by Sesan on August 27, 2018
  57. geometry

    At rosemead high school, 94 students take biology, 86 take ethnic studies, and 95 take geometry. thirty-seven students take both biology and geometry, 43 take geometry and ethnic studies, and 42 take ethnic studies and biology. twenty eight students take

    asked by Audrey on September 14, 2010
  58. geometry

    At rosemead high school, 94 students take biology, 86 take ethnic studies, and 95 take geometry. thirty-seven students take both biology and geometry, 43 take geometry and ethnic studies, and 42 take ethnic studies and biology. twenty eight students take

    asked by Audrey on September 13, 2010
  59. English

    Hey, Is this a text with a lot of mistakes in a/an, the? The most people live in the city called Berlin in Germany, where they eat mostly a Weisswurst for a meal and the people weare all Dirndls ans the Lederhosen. When they go to the school they learn the

    asked by Minnie on December 18, 2012
  60. algebra 10th grade

    please help with this problem Your dad is taking Biology as part of the veterinarian program at the local community college. This semester he will spend a total of 40 hours in the biology lab, and he will take notes in class 6 hours per week. Define a

    asked by mary on March 27, 2013
  61. Sta 112

    This is my question every one . Please help me have it already I had 6 as my answer. In a class of 50 student 28,22,20 of them offer physics,chemistry and biology respectively also 4 of them offer physics and chemistry but not biology,3 offer physics and

    asked by Anonymous on January 23, 2016
  62. Science

    1. Which of the following could be an engineering project that could better protect the planet? -finding a new landfill site -designing a better trash compacter -deciding which product can be recycled*** -growing microbes that eat oil 2. Engineers who are

    asked by Julia on April 25, 2016
  63. EDTECH

    1. Which of the following could be an engineering project that could better protect the planet? -finding a new landfill site -designing a better trash compacter -deciding which product can be recycled*** -growing microbes that eat oil 2. Engineers who are

    asked by Lily-MS.SUE ANYBODY on February 19, 2017
  64. Science

    I'm really bad at Biology and Science in general. Chemistry and Physics will be difficult for me because I'm not good at the Science branch even though I study and work hard for Science/Biology. What can I do to improve?

    asked by Anonymous on February 16, 2016
  65. Maths

    In a class of 45 students, 24 do arts, 20 to chemistry and 22 to biology. All the students do at least one of 3 subjects.3 do all the 3 subjects while 7 do art and biology, 6 do art and chemistry but not biology. How many do biology only, chemistry only or

    asked by Angie on February 26, 2018
  66. English

    Which sentence is punctuated wrong. Who borrowed Celeste biology books? Who borrowed Celeste's biology books? Who borrowed Celestes' biology books? Who borrowed Celestes's biology books?

    asked by Connor on May 21, 2015
  67. 10 grade algebra

    please help with this problem Your dad is taking Biology as part of the veterinarian program at the local community college. This semester he will spend a total of 40 hours in the biology lab, and he will take notes in class 6 hours per week. Define a

    asked by mary on March 27, 2013
  68. VOCAB

    No matter how efficient the new chairperson may be, the meeting will not proceed (harmoniously, authoritatively) unless the new members cooperate Ans - harmoniously A party that cannot offer new ideas to deal with the pressing problems of the day must be

    asked by need help on June 18, 2014
  69. college intermediate

    In a group of 200 high school students, 36 are taking biology, 52 are taking Spanish, and 126 are taking neither biology nor Spanish. If one of these 200 students is to be chosen at random, what is the probability that the student chosen is taking biology

    asked by Darline on October 12, 2014
  70. College Math

    In a group of 200 high school students, 36 are taking biology, 52 are taking Spanish, and 126 are taking neither biology nor Spanish. If one of these 200 students is to be chosen at random, what is the probability that the student chosen is taking biology

    asked by Ed on March 19, 2014
  71. math

    In a group of 200 high school students, 36 are taking biology, 52 are taking Spanish, and 126 are taking neither biology nor Spanish. If one of these 200 students is to be chosen at random, what is the probability that the student chosen is taking biology

    asked by jamel on March 12, 2013
  72. Biology

    Is there any biology websites for teens??? (NOT games! notes and quizzes to practice). The Science of Biology The Chemistry of Life Cell Structure and Function Photosynthesis & Respiration Something REALLY easy to understand(btw I'm going to the 9TH

    asked by Laruen on July 17, 2013
  73. Biology

    The allostery of an enzyme governor is likely to take two forms.They are? A.active and regulatory B. rigid and flexible c. active and passive e. regulatory and relaxed http://en.allexperts.com/q/Biology-664/biology-73.htm

    asked by Sajia on August 10, 2007
  74. Mathematics

    A survey of 100 students produced the following statics: 32 study mathematics, 20 study physics, 45 study Biology, 15 study mathematics and biology, 7 study mathematics and physics, 10 study physics and Biology, 30 do not study any of the three subjects 1,

    asked by Mesh on November 17, 2015
  75. Math

    Out of 300 student in final year in senior secondary school, 200 are offering biology and the150 offering chemistry how many are offering neither biology nor chemistry

    asked by Emmanuel on January 24, 2016
  76. Maths

    In a class of 80 students,53 study Art,60 study biology,36 study Art and biology,34 study Art and chemistry,6 study biology but not chemistry.Illustrate the information on a Venn diagram.Determine the number of students who study Art only And Chemistry

    asked by Nana Adwoa on February 8, 2017
  77. Biology

    The article is presented by HomeworkEasy experts out of five years of stead fast dedication to help students with their biology assignments, homework and projects. Origins of biology as a field are expounded and the academic possibilities are briefed. The

    asked by Daniel on July 11, 2011
  78. ALL OF JISHKA STAFF

    Hello I had a couple of questions and was woundering if you have staff members that are teaching or have taught AP BIOLOGY AP PHYSICS B AP CALCULUS AB AP CHEMISTRY I was told that the AP BIOLOGY teacher had gotten extremly ill =(, has he come back? Also

    asked by Kate on August 19, 2010
  79. Chem

    why is an understanding of chemistry important in biology? All digestion, nutrition, muscle usage/reactions, cell division/reproduction, and all of the enzymatic processes at work in the body are chemisty. Even eyesight is a chemical reaction. So you need

    asked by Samantha on June 18, 2006
  80. Math

    ella took a biology test of 54 question. She got 5/6 with a question correct how many questions did she get wrong on her biology test?

    asked by E on November 18, 2016
  81. biology: the study of life

    2. what is meant by the statement "living things do not exist in isolation"? TRUE/FALSE 3.people study biology only if they are planning to become biologists. 4. by studying biology you can better appreciate the great diversity of species on earth and the

    asked by natalie on January 27, 2008
  82. math

    In a class of 80 students,53 study Art,60 study biology,36 study art and biology,34 study art and chemistry,6 study biology and 18 study biology but not chemistry.Determine the number of students who study =Art only =Chemistry only

    asked by Nana Adwoa on February 8, 2017
  83. SCIENCE ASAP

    Hey just wanna to check this out that I'm pretty studying on Physics and Biology. Process Information is mos definitely I'm succeeding aight and it ain't that hard n'mean? I still all the stuff I gotta need to study. Send me a few ?'s on Process

    asked by Henry C. on August 31, 2005
  84. math

    In a high school, 30% of student take physics, 15% of students take chemistry. The rest of students are taking biology. What is minimum student taking biology? A.7 B.8 C.9 D.10 E.11

    asked by rabie on August 10, 2014
  85. English

    the Great Fire of London by Janet Hardy Gould ---------------------------- Is this book a novel?

    asked by rfvv on April 24, 2014
  86. ECONOMICS

    The following table illustrates the points a student can earn on examinations in economics and biology if the student uses all available hours for study. Economics Biology 100 40 90 50 80 60 70 70 60 80 50 90 40 100 Plot this student’s production

    asked by RAYNE on September 14, 2011
  87. Math

    At small town high there are 100 students,each of whom takes atleast one of Biology,Chemistry,or physics.There are 50 student in Biology,60 in chemistry,and 70 in Physics.If 24 students are enrolled in exactly two of the classes,how many students are in

    asked by Luiz on May 19, 2016
  88. Math

    100 students were asked whether they are taking psychology or biology. 61 were taking pyschology, 18 were taking both and 12 were taking neither. how many were taking biology?

    asked by Jerry on September 25, 2011
  89. BiologyI

    Discoveries in DNA, cell biology, evolution, biotechnology have been among the major achievements in biology over the past 200 years with accelerated discoveries and insights over the last 50 years. Consider the progress we have made in these areas of

    asked by michael R on August 19, 2013
  90. bio101

    2. Find a media piece—article, video, presentation, song, or other—that recognizes the fundamental concepts of chemistry in biology. Include the link or reference citation for the piece and describe how it helped you better understand how fundamental

    asked by kelly on January 27, 2012
  91. English

    Identify the sentence that is correctly punctuated. A. Clara did not study very much for her biology test, therefore, she guessed at many of the answers. B. Clara did not study very much for her biology test; therefore she guessed at many of the answers.

    asked by Angela on May 6, 2014
  92. English

    Identify the sentence that is correctly punctuated. A. Clara did not study very much for her biology test, therefore, she guessed at many of the answers. B. Clara did not study very much for her biology test; therefore she guessed at many of the answers.

    asked by Susan on May 6, 2014
  93. English

    Identify the sentence that is correctly punctuated. A. Clara did not study very much for her biology test, therefore, she guessed at many of the answers. B. Clara did not study very much for her biology test; therefore she guessed at many of the answers.

    asked by Angela on May 6, 2014
  94. mathematics

    If 45 percent of the students of a class have offered mathematics and 85 percent of them biology, find the percentage of students who offered biology only?

    asked by Anonymous on May 21, 2016
  95. Biology

    Music Video Project Biology? Hey! So I am doing a music video project for AP Biology, and my topic is Gene Regulation. I want to know what should be the most important things I should include in my song, and what song I should use (80's/90's/Current) to

    asked by Sam on March 14, 2012
  96. english

    Please explain me about the poem two old bachelors by edward lear . summary of the man he killed by thomas hardy

    asked by manavi on September 7, 2014
  97. Math

    At Small Town High there are 100 students, each of whom takes at least one of biology, chemistry, or physics. There are 50 students in biology, 60 in chemistry, and 70 in physics. If 24 students are enrolled in exactly two of these classes, how many

    asked by kyle on November 7, 2010
  98. Science

    Hi Can someone give me websites that have quizes of Biology for KeyStage 3 for my grade 9 revision And the following topics are : Cells Food, digestion , respiration Living and feeding Variation , classification and inhertiance Plants thanx =) I doubt very

    asked by Fun on April 28, 2007
  99. probability

    The probability that a student passes Biology is 0.35 and the probability to pass Chemistry is 0.63. If the probability to pass both Biology and Chemistry is 0.4, what is the probability that he will pass either Biology or Chemistry?

    asked by Anonymous on February 15, 2012
  100. 7th grade math

    A biology class has 28 students. Four of the students transferred out to take chemistry. Find the percent of change in the number of students in the biology class. I got 86 percent change is that right? Thank you...My mom says it's 14.3 %

    asked by Peggy on January 6, 2016

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