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In humans, the allele for brown eyes (B) is dominant to the allele for blue eyes (b). What is the probability that two heterozygous brown-eyed parents will have a child with blue eyes?

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  1. Biology

    In humans, the allele for brown eyes is dominant to the allele for blue eyes. If a man with blue eyes and a woman with brown eyes who is homozygous for eye color have children, what is the probability of having a child with blue eyes? Here are the choices:
  2. Science

    In humans, the allele for brown eyes (B) is dominant to the allele for blue eyes (b). What is the probability that two heterozygous brown-eyed parents will have a child with blue eyes?
  3. A & P

    Assume that the allele controlling brown eyes (B) is dominant over that controlling blue eyes (b) in human beings. (In actuality, eye color in humans is an example of multigene inheritance, which is much more complex than this.) A blue-eyed man marries a
  4. Biology

    If you inherited an allele for blue eyes from your mother and an allele for brown eyes from your father, you are A) tetraploid B) homozygous C) haploid D) heterozygous I got D marked wrong, I'm so confused. Thanks.
  5. biology

    An individual who is heterozygous for Eye color would be? A.two alleles for brown eyes. B. One allele for brown eyes and one blue eyes. C.two alleles for blue eyes.d.blue eyes I am think b.
  6. Genetics

    Percentage phenotype in eye color in humans In humans, brown eyes are dominant to blue eyes. If a blue-eyed man marries a brown-eyed woman whose mother has blue eyes, what percentage of the brown-eyed offspring do you expect will be heterozygous?
  7. Biology

    Brown eyes in humans are dominant to blue eyes. A brown-eyed man, whose mother was blue-eyed, marries a brown-eyed woman whose father had blue eyes. What is the probability that this couple will have a blue-eyed child?
  8. science

    Why do I have brown eyes? The genes we inherit from our parents determine things like our height, looks, hair color and eye color. This passing of characteristics from parent to child is called heredity. If your mother has brown eyes, and your father has
  9. Science

    Capitalized symbols indicate what type of allele when one allele can express dominance over another? the allele from the mother the dominant allele the allele from the father the recessive allele
  10. Biology

    John has blue eyes, blue eyes are recessive to the dominant trait for brown eye color. his genotype is bb . What is johns phenotype? A. brown B. Bb C. Blue D. bb My best answer is B
  11. biology

    John has blue eyes, blue eyes are recessive to the dominant trait for brown eye color. his genotype is bb . What is johns phenotype? A. brown B. Bb C. Blue D. bb My best answer is B
  12. Probability

    Lavonne’s mother has brown eyes, and her father has blue eyes. Lavonne has brown eyes, and her husband has blue eyes. She knows that her children are equally likely to have brown or blue eyes. What is the probability that her first child will have blue
  13. Math

    Lavonne’s mother has brown eyes, and her father has blue eyes. Lavonne has brown eyes, and her husband has blue eyes. She knows that her children are equally likely to have brown or blue eyes. What is the probability that her first child will have blue
  14. science

    1.The trait for green eyes is dominant (Y) to brown eyes which are recessive (y). Determine the eye color a child will have with a Yy genotype: ☐Blue Eyes ☐ Green Eyes ☐ Hazel Eyes ☐ Brown Eyes 2. A bird that is heterozygous for the yellow feather
  15. science

    What does the notation TT mean to geneticists? two dominant alleles two recessive alleles heterozygous alleles one dominant and one recessive allele*** If one _____ is present, its traits will appear in the organism. single allele*** recessive allele
  16. math

    There are x students in Mrs. Schwartz's third-grade class. One less than half the students have blue eyes. Six fewer children have green eyes than have blue eyes. The rest of the students have brown eyes. How many students have brown eyes? a. 7 b. 8 c.
  17. Statistics

    For the gene pair that determines eye color, each gene trait may be one of two types: dominant brown (B) or recessive blue (b). A person possessing the gene pair BB or Bb has brown eyes, whereas the pair bb produces blue eyes. a) Suppose both parents of an
  18. 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
  19. 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
  20. Biology

    John has blue eyes. Blue eyes are recessive to the dominant trait for brown eye color. His genotype is bb. What is Johns phenotype? I don't know. Explain?
  21. Statistics

    Achusband and wife with brown eyes who have 0.75 probability of having children with brown eyes, 0.125 probability of having children with blue eyes, and 0.125 probability of having children with green eyes. (a) What is the probability that their first
  22. BIOLOGY - HELP URGENT!!!!

    How do the following terms relate to one another with respect to a single genetic locus? - Wild Type Allele(s) - Mutant Allele(s) - Gene Product(s) - Population - Genotype - Phenotype - Dominant Allele - Recessive Allele - Individual - Number of different
  23. Science

    An animal has an allele for yellow eyes, but its eyes are grey. The allele for yellow eyes must be
  24. Statistics

    You conduct a study on eye color and you questioned 550 people a hundred and ten of them have brown eyes and 44% of them have blue eyes what percentage of the people you question has blue or brown eyes
  25. statistic

    There are 20 students in a class. Six of them have blue eyes and nine have brown eyes. You were asked to choose 2 students without replacement. What is the probability of choosing an student with blue eyes followed by a student with brown eyes?
  26. math

    Of 27 students in a class, 10 have blue eyes , 14 have brown eyes , and 3 have green eyes. If 3 students are chosen at random a.what are the odds of all three have blue eyes? b.what are the odds of NO one has brown eyes ?
  27. Science-Biology

    If a mother has brown eyes and a father has blue eyes why do two of their children have blue eyes and one have brown eyes?
  28. Genetics

    In chickens, the Leghorn variety has white feathers due to an autosomal dominant allele. Silkies have white feathers due to recessive allele in a second gene. If true-breeding white leghorn is crossed to a true breeding white silkie, What is the expeected
  29. Math

    Of 27 students in a class, 10 have blue eyes , 14 have brown eyes , and 3 have green eyes. If 3 students are chosen at random . what are the odds of all three have blue eyes?
  30. Science

    In humans, having dimples is a dominant trat. In order for a child to have dimples A. at least one parent must not have dimples and pass on the recessive allele. B. both parents must not have dimples and pass on the recessive allele. C. both parents must
  31. Biology

    GENETICS PRACTICE PROBLEMS Worth 10 points each problem is either right or wrong 1. In humans, assume that brown eyes (B) are dominant over blue eyes (b). A blue eyed man, both of whose parents were brown eyed, marries a brown eyed woman whose father was
  32. Science

    What does the notation TT mean to geneticists? A. Two dominant alleles B. Heterozygous C. At least one dominant allele D. One dominant and one recessive allele Is the answer A?
  33. Science

    What does the notation TT mean to geneticists? a. two dominates alleles b. heterozygous c. at least one dominant allele d. one dominant and one recessive allele I cant seem to find any info about this.
  34. science

    When Mendel crossed purebred short plants with purebred tall plants, _____. all of the offspring were tall half of the offspring were tall one-fourth of the offspring were short*** all of the offspring were short What does the notation TT mean to
  35. Science (Genetics)

    How many males in America have brown eyes, green eyes, and/or blue eyes?
  36. Biology - Genetics

    What is the expected genotypes and phenotypes of F1 flies in the cross between virgin brown eyed female with scarlet males (genes for brown and scarlet eyes are on different autosomes)? I know that brown eyes and scarlet eyes are both recessive but I'm not
  37. Genetics

    How is it that someone with brown eyes could have parents, both with blue eyes? Aren't blue eyes recessive?
  38. Bio

    In Drosophila, sepia colored eyes are due to a recessive allele s and wild type (red eye color) to its dominant allele s+. Sepia-eyed females are crossed to pure wild type males. What phenotypic and genotypic ratios are expected if the F1 males are then
  39. 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
  40. Genetics

    Two genes control eye color and hair color. For gene 1, brown eyes (B) are dominant to blue eyes (b). Gene 2 produces red hair (r) when it is a homozygous recessive and otherwise produced black hair(R) A heterozygous woman mates with a man with blue eyes
  41. Science

    I need help with a quiz. I just want to clarify these are correct. 1. Which of the following traits is acquired A. The number of petals that grow in a plant's flower B. The wing shape of a wild bird C. The ability of some gorillas to use sign language D. A
  42. Science

    I need help with a quiz. I just want to clarify these are correct. 1. Which of the following traits is acquired A. The number of petals that grow in a plant's flower B. The wing shape of a wild bird C. The ability of some gorillas to use sign language D. A
  43. science

    The alleles for brown eyes (B) are dominant, while those for blue eyes (b) are recessive. If Lesley’s mother has the genotype BB and her father has the genotype bb, what is Lesley’s genotype? What is her phenotype?
  44. Stats (probability)

    Of 10 girls in a class, 3 have blue eyes. If two girls are chosen at random, what is the probability that (i) both have blue eyes, (ii) neither has blue eyes, (iii) at least one has blue eyes? I have the answers but do not know how to get them. I'm trying
  45. algebra

    Eye color is determined by genetic combination. Let R represent the gene for brown eyes and L represent the gene for blue eyes. Any gene combination including R results in brown eyes. Consider the offspring of a parent with homozygous brown-eyed,RL,gene
  46. Science

    I said D for the following question but I got it wrong, I know it's not B though because the disease isn't sex-linked and not C because people who get the disease are usually older (50's). Would the Answer be A then? Even though it's deadly the
  47. Biology

    Suggest why Ia and Ib alleles are dominant over Io allele. Why in IaIo genotype, the Io allele is masked
  48. biology

    if a population comprised 52 AA, 114 Aa and 34 aa individuals and the 'A' allele was dominant, what would be the genotype, allele, and phenotype frequencies be
  49. Genetics

    consider blue eyes in man as recessive to brown eyes. Show the expected children of a marriage between a blue eyed woman and brown eyed man who had a blue eyed mother
  50. Science

    many species of animals carry an allele for albinism. albinos are usually pale or whiet in color. explain why the allele for albinism is present at a lower frequency than the allele for having pigments. what conditions would be necessary for the albino
  51. Science

    2. Which of the following describes the genotype and phenotype of parents whose child will definitely have a recessive trait? A. Both parents have a homozygous for the recessive allele and have that trait** B. Both parents have a homozygous for the
  52. PLEASE HELP MS. SUE HELP ME WITH THIS SCIENCE

    2. Which of the following describes the genotype and phenotype of parents whose child will definitely have a recessive trait? A. Both parents have a homozygous for the recessive allele and have that trait** B. Both parents have a homozygous for the
  53. algebra

    Will someone please check my answer: If R is the gene for brown eyes,and L is the gene for blue eyes, consider the children of a parent with a homozygous brown-eyed,RR,gene combination and a parent with a homozygous brown-eyed,RL,gene combination. What
  54. Biology

    For human blood type, the alleles for types A and B are codominant, but both are dominant over the type O allele. The Rh factor is separate from the ABO blood group and is located on a separate chromosome. The Rh+ allele is dominant over the Rh- allele.
  55. math

    Of the 34 students in a class, there are 2 fewer students with blue eyes than there are students with hazel eyes. Also, there are twice as many students with brown eyes than there are students with blue eyes. Which of these is either the number of students
  56. Science

    1. Which of the following traits is acquired? A.) The number of petals that grow in a plants flower B.) the wing shape of a wild bird C.) The ability of some gorillas to learn sign language** D.) A cheetah’s ability to run faster than any other land
  57. Genetics

    What percentage of the F2 offspring predicted in a cross for mice coat color In mice, the allele for black fur is dominant to the allele for brown fur. If a male homozygous black mouse is crossed with a female brown mouse, what percentage of the F2
  58. Science

    1. White skin (W) is dominant over yellow skin (w) in chickens. Which of the following genotypes would result in a white-skinned chicken that could possibly have yellow-skinned offspring? A. WW B. Ww** C. ww 2. Which of the following describes the genotype
  59. Science

    If blue eyes are dominant to green eyes, and two parents have a 50% chance of producing offspring with green eyes. What must the genotypes and phenotypes be for the parents of the offspring. Complete a punnett square to answer this question.
  60. Biology

    "Quiglilies" are a rare variety of flower. They have one allele for orange petal colour O. They also have another allele for white petals W. These alleles have a co-dominant relationship producing a yellow petal colour. i) what are the possible genotypes
  61. Science- RE-DO

    1. White skin (W) is dominant over yellow skin (w) in chickens. Which of the following genotypes would result in a white-skinned chicken that could possibly have yellow-skinned offspring? A. WW B. Ww** C. ww 2. Which of the following describes the genotype
  62. Biology Help PLEASE

    In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heter In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the
  63. Biology Answer Check

    In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heter In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the
  64. biology please help bobpursley

    In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heter In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the
  65. Biology Answer Check !!!!

    In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heter In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the
  66. Biology Answer Check

    In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heter In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the
  67. microbiology

    In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heter In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the
  68. answer check

    In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heter In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the
  69. math

    Eye color is determined by genetic combination. Let R represent the gene for brown eyes and l represent the gene for blue eyes. Any gene combination including R results in brown eyes. Consider the offspring of a parent with a homozygous brown-eyed, RR gene
  70. algebra

    Eye color is determined by genetic combination. Let R represent the gene for brown eyes and l represent the gene for blue eyes. Any gene combination including R results in brown eyes. Consider the offspring of a parent with a homozygous brown-eyed, RR gene
  71. Bio

    Given an allele frequency of o.91 for a hypothetical red allele (bead), the percentage of blue alleles residing in the heterozygotes would be? a) 89% b) 90% c) 91% d) 92% e)93% i don't even know how to approach this question
  72. Science

    1. Which of the following traits is acquired A. the number of petals that grow in a plant's flowers B. the wing shape of a wild bird C. the ability of some gorillas to use sign language D. a cheetah's ability to run faster than any other animal 2. The
  73. science work

    1. Which of the following traits is acquired A. the number of petals that grow in a plant's flowers B. the wing shape of a wild bird C. the ability of some gorillas to use sign language D. a cheetah's ability to run faster than any other animal 2. The
  74. Science Work

    1. Which of the following traits is acquired A. the number of petals that grow in a plant's flowers B. the wing shape of a wild bird C. the ability of some gorillas to use sign language D. a cheetah's ability to run faster than any other animal 2. The
  75. biology

    In tomatoes, there are two alleles for the height gene. The tall allele is dominant over the short allele. You cross a heterozygous plant with a homozygous recessive plant. What phenotypes do you expect in their offspring?
  76. Algebra

    Eye color is determined by genetic combination. Let R represent the gene for brown eyes and l represent the gene for blue eyes. Any gene combination including R represents browns eyes. Consider the offspring of a parents with homozygous brown-eyed, RR,
  77. Science

    Hello. I need help with science questions. Could you please check these answers for me? Thank you very much! 1. Which of the following traits is acquired A. the number of petals that grow in a plant's flowers B. the wing shape of a wild bird C. the ability
  78. bio

    A large population of laboratory animals has been bred randomly for a number of generations. There was an interesting revelation. The scientists noted that there was neither an increase nor a decrease in the frequency of animals displaying the recessive
  79. Science

    1. A pea plant with yellow seeds is crossed with a pea plant with green seeds. All of the offspring have yellow seeds. The allele for yellow seeds is A. dominant because all of the offspring has yellow seeds** B. recessive because all of the offspring has
  80. Biology

    In Mendel's pea plants, purple flowers are dominant to white flowers, and a single gene controls this trait. What are the possible phenotype and genotypes for the trait of flower color? Use P to represent the dominant allele and p to represent the
  81. math//algebra

    Eye color is determined by genetic combination. Let R represent the gene for brown eyes and l represent the gene for blue eyes. Any gene combination including R results in brown eyes. Consider the offspring of a parent with a homozygous brown-eyed, RR, and
  82. Biology Calculation

    If you had 1400 flies with 852 having red eyes and 548 having brown eyes, how many flies would be homozygous dominant red eye?
  83. statistics

    The first sample had 49 subjects and 7 had blue eyes. The second sample had 465 subjects and 244 of these had blue eyes. What is the value of the pooled estimate of the proportion used to test the hypothesis that the population proportions of blue eyes are
  84. statistics

    In a region, 90% of the population have brown eyes. If 15 people are randomly selected, find the probability that at least 13 of them have brown eyes. Is it unusual to randomly select 15 people and find that at least 13 of them have brown eyes? Why or why
  85. Weighted Average

    We had to do weighted averages in evolution and I'm confused. Please help! We were given allele frequencies which we had to determine heterozygosity from with the equation 2p(1-p); p being allele freq. We had to do this for three different regions. The
  86. biology

    Read the statement. A population of foxes only has one allele for a gene that codes for a necessary function in their heart. A new allele for the gene is present in a litter of foxes. Years later, the fox population still only has one allele for this gene.
  87. Biology

    In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heterozygous plant (Tt) is crossed with a homozygous tall plant? A. 100% B. 75% C. 50% D. 25% i think
  88. math

    In a classroom of 7th graders, there are 20 students with brown eyes and 12 students with blue eyes. Another class has the same proportion of brown to blue eyed students, but they have 15 brown eyed students. How many blue eyed students are in that class?
  89. German

    What is this in german? My english teacher has long brown hair and brown eyes. She is very tall and quite slim. She is a good teacher and is very nice. My mum has black hair and dark brown eyes. She is very tall. She is very caring but can be quite mean
  90. statistics

    Find the probability that among six randomly selected people, exactly four of them have brown eyes. Assume that 40% of the population has brown eyes
  91. please help bio

    R stands for the dominant form of the color blindness allele and r signifies the recessive form. Because Edward is NOT color blind, the allele on his X chromosome must be __________.
  92. math

    If 2/3 of a class has brown hair, and 1/5 of the students with brown hair have blue eyes, what portion of the class has brown hair with blue eyes?
  93. BIO. LIFE SCIENCE

    IN GARDEN PEAS, THE ALLELE FOR TELLOW PEAS IS DOMINATE T OTHE ALLELE FOR GREEN PEAS. SUPPOSE YOU HAVE A PLANT THAT PRODEUCES YELLOW PEAS, BUT YOU DON'T KNOW WHETHER IT IS HOMOZYGOUS DOMINANT OR HETEROZYGOUS. WHAT EXPERIMENT COULD YOU DO TO FIND OUT?
  94. science

    Solve the following genetic problems using the Punnet method: Phenylketonuria, a metabolic disease in humans, is caused by a recessive allele, k. If two heterozygous carriers of the allele marry and plan a family of five children: (a) What is the chance
  95. Biology

    You have a population where the percentage of homozygous dominant individuals is 27%. Use the equation to fill in this table. Frequency of the dominant allele (answer here) Frequency of the recessive allele (answer here) % homozygous dominant (answer here)
  96. Science-Biology

    To note: all three are blond, ellie's eyes are brown, her brothers are blue. Ellie's father is homozygous for eye colour but her mother is heterozygous. She passed a 'blue eye' gene to the boys and a 'brown eye' gene to Ellie. Brown hair is dominant over
  97. Biology 9th grade

    12. Complete the following monohybrid cross. Two parents that are heterozygous for brown eyes. Be sure to identify the genotypes of the parents, complete the Punnett square, identify the phenotypes with genotypes and the ratio of the phenotypes. What
  98. language arts

    (excerpt from "the treasure of Lemon Brown" by Walter Dean Myers) "I used to have a knotty-headed boy just like you." Lemon Brown had half walked, half shuffled back to the corner and sat down against the wall. "had them big eyes like you got, I used to
  99. Science

    In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heterozygous plant (Tt) is crossed with a homozygous tall plant? A. 100% B. 75% c. 50% D. 25% B?
  100. math

    in a class one quarter of students have blonde hair and brown eyes and one third have brown eyes and blonde hair what fraction of the class in total have brown eyes

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