Question 1

If an individual allele has more than one effect on the phenotype it is said to be

Accepted Answer

A)  pleiotropic.
B)  epistatic.
C)  recessive.
D)  dominant.
E)  homozygotic.F) C) and E)
G) A) and E)

Question 2

A diploid individual whose two copies of a given gene are the same.

Accepted Answer

A)  genotype
B)  heterozygote
C)  homozygote
D)  phenotypeE) A) and B)
F) A) and C)

Question 3

A person who has lost a large amount of blood but is still alive is found in a wrecked automobile under a highway bridge.Several people are helping the paramedics load the victim into the ambulance.After the ambulance has departed for the hospital,you overhear the following conversation from the persons who helped the paramedics."I am certain that when that guy gets to the hospital,they will transfuse him with any blood that they have in the blood bank since he has lost so much blood." The other person says,"Yeah,I bet you're right!" Having had a biology course,you know which blood could be safely given to anyone.Select it below.

Accepted Answer

A)  A
B)  B
C)  AB
D)  OE) A) and B)
F) B) and C) D

Question 4

Based on the inheritance pattern of the secretor trait,a secretor can have a genotype of

Accepted Answer

A)  either Se/Se or Se/se.
B)  either Se/Se or Se/ns.
C)  Se/Se.
D)  se/se.E) A) and D)
F) A) and C)

Question 5

Achondroplasia is a common form of dwarfism caused by autosomal dominant mutation in the fibroblast growth factor receptor gene 3.If a person with achondroplasia married and had children with a person of normal height,what is the probability that both their first child and second child would have achondroplasia?

Accepted Answer

A)  1/8
B)  1/4
C)  1/2
D)  1E) None of the above
F) A) and B)

Question 6

ABO blood group expression is an example of

Accepted Answer

A)  epistasis.
B)  dominance.
C)  recessiveness.
D)  multiple alleles.
E)  pleiotropy.F) C) and D)
G) A) and E)

Question 7

What is the name of the cross that involves the mating of a hybrid F1 plant with a homozygous recessive plant for the same trait?

Accepted Answer

A)  monohybrid cross
B)  dihybrid cross
C)  reciprocal cross
D)  test cross
E)  back crossF) B) and E)
G) All of the above D

Question 8

Mendel chose the garden pea for his work on inheritance for all of the following reasons except

Accepted Answer

A)  he failed his examination for a teaching certificate.
B)  earlier investigators had shown segregation among the offspring.
C)  a large number of true breeding varieties were already available.
D)  the generation time was short;many offspring can be grown easily.
E)  he could choose to self- or cross-pollinatE.F) D) and E)
G) B) and D)

Question 9

In a typical Mendel experiment on pea-seed color,if the dominant yellow seed-bearing plant was crossed with the recessive green seed-bearing plant,the F2 generation will show what ratio of each kind?

Accepted Answer

A)  1 yellow: 3 green
B)  1 yellow: 1 green
C)  3 yellow: 1 green
D)  seeds with patches of green and yellow color
E)  tall plants with yellow seeds and short plants with green seedsF) A) and E)
G) A) and B)

Question 10

One of the general principles of biology that was accepted before much was known about genetics was that

Accepted Answer

A)  heredity occurs within species,and species "breed true."
B)  hybrids can form occasionally from any two parents.
C)  mythical monsters can no longer be found on Earth.
D)  traits are transmitted directly.
E)  traits of both parents are blended in the offspring.F) B) and D)
G) None of the above

Question 11

When Mendel crossed dark purple-flowered pea plants with white-flowered pea plants,he never got any pea plants with light purple flowers.This was counter to the

Accepted Answer

A)  idea of acquired characteristic inheritance.
B)  theory of blending inheritance.
C)  the assumption of direct transmission of traits.
D)  the law of dominance.
E)  the laws of probability.F) A) and B)
G) C) and E) B

Question 12

Mendel's observations that different pairs of genes assort independently of each other is known as Mendel's

Accepted Answer

A)  First Law of Heredity.
B)  Pea Manifesto.
C)  Statement of Assortment Principle.
D)  Second Law of Heredity.
E)  Theory of Genetic IndependencE.F) C) and D)
G) B) and C)

Question 13

Alternate forms of the same gene are called ______.

Accepted Answer

A)  crosses
B)  genotypes
C)  cofactors
D)  allelesE) C) and D)
F) B) and D)

Question 14

As the new technician in a lab that studies coat color in rodents,you are assigned the task of counting and recording the coat color of the F2 progeny of a dihybrid cross.Your results are: 18 agouti mice,6 black mice,8 albino mice.Based on this data,you conclude that coat color in rodents

Accepted Answer

A)  involves an epistatic interaction.
B)  is determined by three different genes.
C)  depends on prenatal nutrition.
D)  involves incomplete dominance.E) C) and D)
F) A) and B)

Question 15

How many different types of gametes can be formed by plants with a genotype of PpYYrrTt?

Accepted Answer

A)  2
B)  4
C)  8
D)  16E) A) and B)
F) A) and C)

Question 16

Height and eye colors are two examples of continuous variation in humans.Whereas in pea plants the tall allele is dominant over the short allele,there are no intermediate heights in peas.Which of the following is the best explanation for the differences described above?

Accepted Answer

A)  Humans are more advanced than pea plants;thus,the genetics of peas is much simpler than humans.
B)  The intermediate size pea plant seeds are aborted within the seedpod and thus will never develop.
C)  The intermediate size pea plant seeds have deleterious alleles that prevent them from germinating.
D)  Many genes,rather than one gene for a characteristic,control some variations in species.
E)  These variations in humans are affected by lack of dominance in the alleles that control these traits.F) A) and C)
G) A) and B)

Question 17

Let P = purple flowers and p = white,and T = tall plants and t = dwarf.What would be the appearance of a plant with the genotype PpTt?

Accepted Answer

A)  purple flowers,tall
B)  purple flowers,dwarf
C)  white flowers,tall
D)  white flowers,dwarf
E)  pale purple flowers,intermediate heightF) None of the above
G) B) and C)

Question 18

Why would a genetic counselor need to know how to construct a human pedigree?

Accepted Answer

A)  A genetic counselor provides individuals and potential parents with the probabilities of inheriting a particular disease.An accurate pedigree is an essential part of establishing the correct probabilities.
B)  A genetic counselor provides individuals and potential parents with the probabilities of inheriting a particular disease.An accurate pedigree is not necessary in determining disease.
C)  A genetic counselor needs to know how to construct pedigrees to determine genotypes.D) A) and B)
E) All of the above

Question 19

Early geneticists demonstrated all of the following about inherited traits except

Accepted Answer

A)  traits can be masked in some generations,but subsequently reappear unchanged in future generations.
B)  traits segregate among the offspring of a cross.
C)  certain traits are more likely to be represented than their alternatives.
D)  all traits breed true.E) C) and D)
F) A) and B)

Question 20

Mendel performed reciprocal crosses in which he used pollen from a white-flowered plant to fertilize a purple-flowered plant and pollen from a purple-flowered plant to fertilize a white-flowered plant.What did these reciprocal crosses demonstrate?

Accepted Answer

A)  The reciprocal crosses demonstrated that each parent made an unequal contribution to the offspring.
B)  The reciprocal crosses demonstrated that each parent made an equal contribution to the offspring.
C)  The reciprocal crosses demonstrated that each parent could made an equal contribution to the offspring,but this did not always occur.D) A) and B)
E) None of the above

Exam 12: Patterns of Inheritance

If an individual allele has more than one effect on the phenotype it is said to be

Correct Answer
verified

A diploid individual whose two copies of a given gene are the same.

Correct Answer
verified

Correct Answer
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D

Based on the inheritance pattern of the secretor trait,a secretor can have a genotype of

Correct Answer
verified

Correct Answer
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ABO blood group expression is an example of

Correct Answer
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What is the name of the cross that involves the mating of a hybrid F₁ plant with a homozygous recessive plant for the same trait?

Correct Answer
verified
D

Mendel chose the garden pea for his work on inheritance for all of the following reasons except

Correct Answer
verified

In a typical Mendel experiment on pea-seed color,if the dominant yellow seed-bearing plant was crossed with the recessive green seed-bearing plant,the F₂ generation will show what ratio of each kind?

Correct Answer
verified

One of the general principles of biology that was accepted before much was known about genetics was that

Correct Answer
verified

When Mendel crossed dark purple-flowered pea plants with white-flowered pea plants,he never got any pea plants with light purple flowers.This was counter to the

Correct Answer
verified
B

Mendel's observations that different pairs of genes assort independently of each other is known as Mendel's

Correct Answer
verified

Alternate forms of the same gene are called ______.

Correct Answer
verified

As the new technician in a lab that studies coat color in rodents,you are assigned the task of counting and recording the coat color of the F₂ progeny of a dihybrid cross.Your results are: 18 agouti mice,6 black mice,8 albino mice.Based on this data,you conclude that coat color in rodents

Correct Answer
verified

How many different types of gametes can be formed by plants with a genotype of PpYYrrTt?

Correct Answer
verified

Height and eye colors are two examples of continuous variation in humans.Whereas in pea plants the tall allele is dominant over the short allele,there are no intermediate heights in peas.Which of the following is the best explanation for the differences described above?

Correct Answer
verified

Let P = purple flowers and p = white,and T = tall plants and t = dwarf.What would be the appearance of a plant with the genotype PpTt?

Correct Answer
verified

Why would a genetic counselor need to know how to construct a human pedigree?

Correct Answer
verified

Early geneticists demonstrated all of the following about inherited traits except

Correct Answer
verified

Mendel performed reciprocal crosses in which he used pollen from a white-flowered plant to fertilize a purple-flowered plant and pollen from a purple-flowered plant to fertilize a white-flowered plant.What did these reciprocal crosses demonstrate?

Correct Answer
verified

Exam 12: Patterns of Inheritance

If an individual allele has more than one effect on the phenotype it is said to be

Correct AnswerverifiedShow Answer

A diploid individual whose two copies of a given gene are the same.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedD

Based on the inheritance pattern of the secretor trait,a secretor can have a genotype of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

ABO blood group expression is an example of

Correct AnswerverifiedShow Answer

What is the name of the cross that involves the mating of a hybrid F1 plant with a homozygous recessive plant for the same trait?

Correct AnswerverifiedD

Mendel chose the garden pea for his work on inheritance for all of the following reasons except

Correct AnswerverifiedShow Answer

In a typical Mendel experiment on pea-seed color,if the dominant yellow seed-bearing plant was crossed with the recessive green seed-bearing plant,the F2 generation will show what ratio of each kind?

Correct AnswerverifiedShow Answer

One of the general principles of biology that was accepted before much was known about genetics was that

Correct AnswerverifiedShow Answer

When Mendel crossed dark purple-flowered pea plants with white-flowered pea plants,he never got any pea plants with light purple flowers.This was counter to the

Correct AnswerverifiedB

Mendel's observations that different pairs of genes assort independently of each other is known as Mendel's

Correct AnswerverifiedShow Answer

Alternate forms of the same gene are called ______.

Correct AnswerverifiedShow Answer

As the new technician in a lab that studies coat color in rodents,you are assigned the task of counting and recording the coat color of the F2 progeny of a dihybrid cross.Your results are: 18 agouti mice,6 black mice,8 albino mice.Based on this data,you conclude that coat color in rodents

Correct AnswerverifiedShow Answer

How many different types of gametes can be formed by plants with a genotype of PpYYrrTt?

Correct AnswerverifiedShow Answer

Height and eye colors are two examples of continuous variation in humans.Whereas in pea plants the tall allele is dominant over the short allele,there are no intermediate heights in peas.Which of the following is the best explanation for the differences described above?

Correct AnswerverifiedShow Answer

Let P = purple flowers and p = white,and T = tall plants and t = dwarf.What would be the appearance of a plant with the genotype PpTt?

Correct AnswerverifiedShow Answer

Why would a genetic counselor need to know how to construct a human pedigree?

Correct AnswerverifiedShow Answer

Early geneticists demonstrated all of the following about inherited traits except

Correct AnswerverifiedShow Answer

Mendel performed reciprocal crosses in which he used pollen from a white-flowered plant to fertilize a purple-flowered plant and pollen from a purple-flowered plant to fertilize a white-flowered plant.What did these reciprocal crosses demonstrate?

Correct AnswerverifiedShow Answer

Correct Answer
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D

Correct Answer
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Correct Answer
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What is the name of the cross that involves the mating of a hybrid F₁ plant with a homozygous recessive plant for the same trait?

Correct Answer
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D

Correct Answer
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In a typical Mendel experiment on pea-seed color,if the dominant yellow seed-bearing plant was crossed with the recessive green seed-bearing plant,the F₂ generation will show what ratio of each kind?

Correct Answer
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Correct Answer
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Correct Answer
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B

Correct Answer
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Correct Answer
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As the new technician in a lab that studies coat color in rodents,you are assigned the task of counting and recording the coat color of the F₂ progeny of a dihybrid cross.Your results are: 18 agouti mice,6 black mice,8 albino mice.Based on this data,you conclude that coat color in rodents

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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