Question 1

The Principle of ________ states that the 2 alleles present at each gene locus separate from one another during gamete formation and remain distinct.

Accepted Answer

A)  Alleles
B)  Segregation
C)  Crossing over
D)  Dominance
E)  Independent assortmentF) C) and D)
G) A) and C)

Question 2

An extensive study was conducted on identical twins who were separated at birth.Among other things,the study showed that the individual from each pair who received better nutrition during childhood tended to score higher on standardized intelligence tests.This can best be described as an example of how

Accepted Answer

A)  mutation alters phenotype.
B)  environment alters phenotype.
C)  environment alters genotype.
D)  mutation alters genotype.
E)  pleiotropic genes affect more than one trait.F) C) and D)
G) B) and E)

Question 3

The observable expression of the genes present is called

Accepted Answer

A)  genotype
B)  karyotype
C)  epistasis
D)  phenotypeE) None of the above
F) All of the above

Question 4

Mendel demonstrated which of the following about inherited traits? Check all that apply.

Accepted Answer

A)  traits can be hidden 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 appear than their alternatives.
D)  some traits show blending inheritance.
E)  parents that both have the same trait can have offspring with an alternative trait.F) None of the above
G) B) and C)

Question 5

In modern terminology,Mendel's heredity "factors" are called

Accepted Answer

A)  DNA.
B)  chromosomes.
C)  genes.
D)  RNA.E) A) and B)
F) None of the above

Question 6

Pedigrees are useful to geneticists because they can help determine: Check all that apply.

Accepted Answer

A)  the mode of inheritance for a particular trait.
B)  the genotype of a particular individual.
C)  the probability that future offspring will inherit a particular trait.
D)  whether a particular trait is dominant or recessive.E) A) and B)
F) None of the above

Question 7

Sometimes,one gene pair will interfere with the expression of a second gene pair in an interaction called

Accepted Answer

A)  incomplete dominance.
B)  codominance.
C)  blending inheritance.
D)  pleiotropy.
E)  epistasis.F) A) and B)
G) C) and E) E

Question 8

Mendel used the ________ to determine whether an individual with the dominant phenotype was homozygous or heterozygous for that trait.

Accepted Answer

A)  backcross
B)  testcross
C)  dihybrid cross
D)  F2 generation
E)  double crossF) B) and D)
G) B) and C)

Question 9

If you are tossing a six-sided die,what is the probability of getting either a 1 or a 2 on your first toss AND a 1 or a 2 on your second toss?

Accepted Answer

A)  1/18
B)  1/9
C)  1/6
D)  1/3
E)  2/3F) A) and B)
G) B) and E)

Question 10

Height is a trait that shows continuous variation in humans.In pea plants,on the other hand,the tall allele is dominant over the short allele and there are no intermediate heights.What is the best explanation for this difference?

Accepted Answer

A)  The alleles that control height in pea plants are epistatic.
B)  The alleles that control height in pea plants are pleiotropic.
C)  The alleles that control height in humans are pleiotropic.
D)  Height is a polygenic trait in humans.
E)  Height is a polygenic trait in pea plants.F) B) and D)
G) None of the above D

Question 11

Three babies were recently mixed up in a hospital.Based on the data in the table above,the couple with blood types A and B are the actual parents of the child with blood type

Accepted Answer

A)  O
B)  B
C)  AB
D)  None of these babies could be the child of the couple with blood types A and B.E) A) and B)
F) A) and C)

Question 12

What type of cross is used to determine if an individual with the dominant form of a trait is homozygous or heterozygous?

Accepted Answer

A)  double cross
B)  dihybrid cross
C)  reciprocal cross
D)  test cross
E)  back crossF) C) and D)
G) B) and E)

Question 13

A cross where we follow the inheritance of 2 pairs of alleles is called

Accepted Answer

A)  homozygous.
B)  monohybrid.
C)  dihybrid.
D)  heterozygous.
E)  diallelic.F) D) and E)
G) C) and E)

Question 14

Mendel's Principle of Independent Assortment states that different pairs of

Accepted Answer

A)  non-homologous chromosomes segregate independently of each other.
B)  sister chromatids segregate independently of each other.
C)  non-sister chromatids segregate independently of each other.
D)  alleles segregate independently of each other.
E)  gametes segregate independently of each other.F) A) and B)
G) C) and D)

Question 15

Consider the cross AaBbCcddEe X AABBccDDEe.If these 5 allele pairs all assort independently,then the probability that any individual offspring will have the genotype AABBccDdEe is 1 out of

Accepted Answer

The answer of Consider the cross AaBbCcddEe X AABBccDDEe.If these...

Question 16

In rabbits,there is a gene that controls ear length,with a dominant allele "T" for long ears and a recessive allele "t" for short ears.At another gene locus,there are alleles "B" for black coat and "W" for white coat.Neither the B or W allele is dominant,and BW produces a gray coat.These two allele pairs assort independently.If a gray rabbit that is heterozygous at the gene locus controlling ear length is mated with a white rabbit that is also heterozygous at the gene locus controlling ear length,what proportion of the long-eared offspring will be homozygous for the long-eared trait?

Accepted Answer

A)  1/8
B)  1/4
C)  1/3
D)  1/2E) All of the above
F) C) and D) C

Question 17

Before Mendel's experiments with pea plants,which ideas formed the basis for most thinking about heredity? Check all that apply.

Accepted Answer

A)  species gradually change over time
B)  the traits of both parents are blended together in their offspring
C)  heredity occurs within species
D)  some traits are dominant and some are recessive
E)  traits are transmitted directly from parents to offspringF) B) and C)
G) A) and E)

Question 18

Achondroplasia is a common form of dwarfism caused by an autosomal dominant mutation in the fibroblast growth factor receptor 3 (FGFR3) gene.Two copies of the mutant gene are invariably fatal before or shortly after birth.If a person with achondroplasia marries a person of normal height,what is the probability that both their first child and second child will have achondroplasia?

Accepted Answer

A)  1/8
B)  1/4
C)  1/2
D)  1E) C) and D)
F) All of the above

Question 19

Let P = purple flowers and p = white,and T = tall plants and t = dwarf.If the uppercase letters represent the dominant alleles,what is the phenotype 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) B) and C)
G) B) and E)

Question 20

A diploid organism that has two identical alleles for a given trait is called ________ for that trait.

Accepted Answer

A)  homozygous
B)  heterozygous
C)  dominant
D)  recessive
E)  codominantF) A) and E)
G) D) and E)

Exam 12: Patterns of Inheritance

The Principle of ________ states that the 2 alleles present at each gene locus separate from one another during gamete formation and remain distinct.

Correct Answer
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Correct Answer
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The observable expression of the genes present is called

Correct Answer
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Mendel demonstrated which of the following about inherited traits? Check all that apply.

Correct Answer
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In modern terminology,Mendel's heredity "factors" are called

Correct Answer
verified

Pedigrees are useful to geneticists because they can help determine: Check all that apply.

Correct Answer
verified

Sometimes,one gene pair will interfere with the expression of a second gene pair in an interaction called

Correct Answer
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E

Mendel used the ________ to determine whether an individual with the dominant phenotype was homozygous or heterozygous for that trait.

Correct Answer
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If you are tossing a six-sided die,what is the probability of getting either a 1 or a 2 on your first toss AND a 1 or a 2 on your second toss?

Correct Answer
verified

Height is a trait that shows continuous variation in humans.In pea plants,on the other hand,the tall allele is dominant over the short allele and there are no intermediate heights.What is the best explanation for this difference?

Correct Answer
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D

Three babies were recently mixed up in a hospital.Based on the data in the table above,the couple with blood types A and B are the actual parents of the child with blood type

Correct Answer
verified

What type of cross is used to determine if an individual with the dominant form of a trait is homozygous or heterozygous?

Correct Answer
verified

A cross where we follow the inheritance of 2 pairs of alleles is called

Correct Answer
verified

Mendel's Principle of Independent Assortment states that different pairs of

Correct Answer
verified

Consider the cross AaBbCcddEe X AABBccDDEe.If these 5 allele pairs all assort independently,then the probability that any individual offspring will have the genotype AABBccDdEe is 1 out of

Correct Answer
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Correct Answer
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C

Before Mendel's experiments with pea plants,which ideas formed the basis for most thinking about heredity? Check all that apply.

Correct Answer
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Correct Answer
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Let P = purple flowers and p = white,and T = tall plants and t = dwarf.If the uppercase letters represent the dominant alleles,what is the phenotype of a plant with the genotype PpTt?

Correct Answer
verified

A diploid organism that has two identical alleles for a given trait is called ________ for that trait.

Correct Answer
verified

Exam 12: Patterns of Inheritance

The Principle of ________ states that the 2 alleles present at each gene locus separate from one another during gamete formation and remain distinct.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The observable expression of the genes present is called

Correct AnswerverifiedShow Answer

Mendel demonstrated which of the following about inherited traits? Check all that apply.

Correct AnswerverifiedShow Answer

In modern terminology,Mendel's heredity "factors" are called

Correct AnswerverifiedShow Answer

Pedigrees are useful to geneticists because they can help determine: Check all that apply.

Correct AnswerverifiedShow Answer

Sometimes,one gene pair will interfere with the expression of a second gene pair in an interaction called

Correct AnswerverifiedE

Mendel used the ________ to determine whether an individual with the dominant phenotype was homozygous or heterozygous for that trait.

Correct AnswerverifiedShow Answer

If you are tossing a six-sided die,what is the probability of getting either a 1 or a 2 on your first toss AND a 1 or a 2 on your second toss?

Correct AnswerverifiedShow Answer

Height is a trait that shows continuous variation in humans.In pea plants,on the other hand,the tall allele is dominant over the short allele and there are no intermediate heights.What is the best explanation for this difference?

Correct AnswerverifiedD

Three babies were recently mixed up in a hospital.Based on the data in the table above,the couple with blood types A and B are the actual parents of the child with blood type

Correct AnswerverifiedShow Answer

What type of cross is used to determine if an individual with the dominant form of a trait is homozygous or heterozygous?

Correct AnswerverifiedShow Answer

A cross where we follow the inheritance of 2 pairs of alleles is called

Correct AnswerverifiedShow Answer

Mendel's Principle of Independent Assortment states that different pairs of

Correct AnswerverifiedShow Answer

Consider the cross AaBbCcddEe X AABBccDDEe.If these 5 allele pairs all assort independently,then the probability that any individual offspring will have the genotype AABBccDdEe is 1 out of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedC

Before Mendel's experiments with pea plants,which ideas formed the basis for most thinking about heredity? Check all that apply.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Let P = purple flowers and p = white,and T = tall plants and t = dwarf.If the uppercase letters represent the dominant alleles,what is the phenotype of a plant with the genotype PpTt?

Correct AnswerverifiedShow Answer

A diploid organism that has two identical alleles for a given trait is called ________ for that trait.

Correct AnswerverifiedShow Answer

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E

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D

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C

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