Question 21
Scientists for NASA are working on a portable farming system for future missions. It was observed, if the roots are completely submerged in water, or over-watered, the plants tended to die. What would be a simple experiment to examine this hypothesis?
a
Over-water a group of plants and compare it to an equal group of plants that are watered normally.
b
Over-water another plant and see if it dies.
c
Over-water a group of plants and compare it to one plant that is watered normally.
d
Don't over-water a group of plants and see if they live.
Question 22
Mendel called plants that received different alleles for a trait from each parent _________________ .
a
recessive
b
purebred
c
hybrids
d
genotype
Question 23
When studying pea plants, Gregor Mendel made many interesting discoveries and came to a few conclusions about what happens as a result of fertilization. Mendel believed that the characteristics of pea plants are determined by the
a
Inheritance of traits from both parents
b
Health of both parents at the time of pollination
c
Inheritance of traits from one parent
d
Health of parent the trait was passed on from
Question 24
The diagram shows a dihybrid cross between pea plants.
How does meiosis affect the variation in the offspring of this cross?
a
Meiosis causes alleles to assort in pairs, creating less variety of traits in the offspring.
b
Meiosis causes alleles to assort in pairs, creating a greater variety of traits in the offspring.
c
Meiosis causes alleles to assort independently, creating less variety of traits in the offspring.
d
Meiosis causes alleles to assort independently, creating a greater variety of traits in the offspring.
Question 25
What type of inheritance is shown in the pedigree?
a
sex linked recessive
b
sex linked dominant
c
autosomal dominant
d
autosomal recessive
Question 26
According to this Punnett Square, what percentage of the offspring will be female?
Punnett square | definition of Punnett square by Medical dictionary
a
0
b
100
c
75
d
50
e
25
Question 27
White rabbit with black rabbit photo WP32787
In rabbits, black fur is dominant to white fur. As a rabbit breeder, you crossed a BB male with a Bb female, please complete the Punnett square for the possible genotypes of the offspring. Then complete, the percent chance for the phenotypes of the offspring.
***Please follow all Punnett square rules to complete this question.
offspring 1 offspring 2
offspring 3 offspring 4
% Black
% White
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Question 28
Incomplete dominance is shown in the fruitloop flower, WW are white, RR are red and WR are pink.
Use scratch paper to set up a Punnett square for a cross of the F1 generation (pink flowers).
What is the percentage of pink flowered offspring in the F2 generation of two pink flowering fruitloop plants?
a
100% pink
b
75% pink
c
50% pink
d
25% pink
e
no pink
Question 29
Sarah has type A blood, and Jesse has type O blood. Their son has type B blood. Can Jesse be the baby daddy? He is a bit worried.
Please complete the Punnett squares to determine the possibilities.
a
No, this is impossible
b
Yes, if both parents are heterozygous
c
Yes, if one parent is heterozygous
d
No, type B blood must be homozygous
Question 30
The pedigree shows the phenotypes for the hair color of individuals in a family over four generations. In this pedigree, light hair color is a recessive allele, and dark hair color is a dominant allele.
In the first generation of the pedigree, a dark-haired male is crossed with a light-haired female. This cross produces one dark-haired male, one light-haired female, and one dark-haired female in generation two. The dark-haired male in generation two crosses with a dark-haired female to produce three offspring, one dark-haired female, one light-haired male, and one labeled X in generation three. The dark-haired female from generation three crosses with a light-haired male to produce three offspring, one light-haired male, one dark-haired female, and one labeled W in generation four.
What is the probability that offspring W will have the dark hair phenotype?
a
25%
b
50%
c
75%
d
100%
Question 31
What Viruses and Bacteria Have in Common?
Although viruses and bacteria are different, they do share several similarities. Some characteristics common both in viruses and bacteria are explained below:
: Both viruses and bacteria are very tiny and are not seen by naked eyes. Both are found in different forms and can be observed under a microscope.
: Viruses and bacteria can infect a host organism (plant, animal, human or a bacterium) and may cause illness.
: Bacteria and viruses contain a genome.
Word Bank:
ribosomesgenetic materialproteinsInfectivityphospholipidsmacroscopicmicroscopic
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Question 32
Which of the following is found in viruses and NOT in cells?
a
nucleolus
b
protein capsid
c
ribosomes
d
cytosol
Question 33
You're looking at a sample from your patient under the microscope. Does your patient have a virus? - ProProfs
You're looking at a sample from your patient under the microscope. Does your patient have a virus?
a
Yes, my patient has a virus, since this is not a cell.
b
No, my patient does not have a virus, this is a bacterial cell.
c
Yes, my patient has a virus, as this a typical viral structure.
d
No, my patient does not have a virus, this is a fungal cell.
Question 34
What is the genotype for the individual II-3?
a
EE
b
ee
c
Ee
d
attached earlobes
e
unattached earlobes
Question 35
Select ALL characteristics and information that CAN be obtained from a karyotype?
a
number of autosomes
b
location of centromeres
c
number of sex chromosomes
d
number of chromosomes
e
single gene inherited disease
f
biological gender
a. number of autosomes
b. location of centromeres
c. number of sex chromosomes
d. number of chromosomes
f. biological gender