Question 1

If two alleles for the same trait have an equal effect on the phenotype, the alleles are ___________.

Accepted Answer

The answer of If two alleles for the same trait...

Question 2

A Punnett square is used to

Accepted Answer

A)  determine the source of new alleles. 
B)  determine how many genes control a given trait. 
C)  predict the gametes that will be produced by an organism. 
D)  predict the outcome of a genetic cross. 
A)  determine the source of new alleles. 
B)  determine how many genes control a given trait. 
C)  predict the gametes that will be produced by an organism. 
D)  predict the outcome of a genetic cross.

Question 3

There are no known exceptions to Mendel's law of independent assortment.

Accepted Answer

A) True 
 B)False

Question 4

A mutation that occurs in a diploid cell can be inherited only if

Accepted Answer

A)  the mutated allele is recessive. 
B)  the mutated allele is dominant. 
C)  the mutation occurs in a cell that produces gametes. 
D)  the same mutation also occurs on the homologous chromosome. 
A)  the mutated allele is recessive. 
B)  the mutated allele is dominant. 
C)  the mutation occurs in a cell that produces gametes. 
D)  the same mutation also occurs on the homologous chromosome.

Question 5

What is the smallest number of traits that are needed to test Mendel's law of independent assortment?

Accepted Answer

A)  one 
B)  two 
C)  four 
D)  eight 
A)  one 
B)  two 
C)  four 
D)  eight

Question 6

If the D allele is completely dominant over the d allele, what percentage of the offspring will have the dominant phenotype when two heterozygous individuals mate?

Accepted Answer

A)  25 percent 
B)  50 percent 
C)  75 percent 
D)  100 percent 
A)  25 percent 
B)  50 percent 
C)  75 percent 
D)  100 percent

Question 7

Inheritance of ABO blood type in humans is an example of

Accepted Answer

A)  codominance. 
B)  complete dominance. 
C)  a gene that is coded by more than two alleles. 
D)  all of the above 
A)  codominance. 
B)  complete dominance. 
C)  a gene that is coded by more than two alleles. 
D)  all of the above

Question 8

The first generation of phenotypes resulting from a genetic cross between two members of the parental generation would be seen in the ____ generation.

Accepted Answer

The answer of The first generation of phenotypes resulting from...

Question 9

A genotype is always expressed in the phenotype.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following expresses Mendel's law of segregation?

Accepted Answer

A)  All dominant alleles of different genes separate into separate cells from the recessive alleles. 
B)  Two copies of a gene separate during meiosis and end up in different gametes. 
C)  When gametes form, the genes originally from one parent all end up in different gametes from the genes originally from the other parent. 
D)  Gametes with recessive alleles will fuse only with each other. 
A)  All dominant alleles of different genes separate into separate cells from the recessive alleles. 
B)  Two copies of a gene separate during meiosis and end up in different gametes. 
C)  When gametes form, the genes originally from one parent all end up in different gametes from the genes originally from the other parent. 
D)  Gametes with recessive alleles will fuse only with each other.

Question 11

Mendel's laws were able to predict accurately the pattern of inheritance for situations in which

Accepted Answer

A)  alleles are affected by their environment. 
B)  alleles show complete dominance. 
C)  alleles of one gene alter the effect of a different gene. 
D)  a given character is determined by more than one gene. 
A)  alleles are affected by their environment. 
B)  alleles show complete dominance. 
C)  alleles of one gene alter the effect of a different gene. 
D)  a given character is determined by more than one gene.

Question 12

If an offspring has a total of 32 alleles, it inherited _____ alleles from each parent.

Accepted Answer

The answer of If an offspring has a total of...

Question 13

Each cell in a human contains a different set of genes.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following choices represents the genotype of an individual diploid organism?

Accepted Answer

A)  BbCCdd 
B)  BCd 
C)  bCd 
D)  BbCd 
A)  BbCCdd 
B)  BCd 
C)  bCd 
D)  BbCd

Question 15

Alternate versions of the same gene, such as blue or brown for eye color, are known as _______.

Accepted Answer

The answer of Alternate versions of the same gene, such...

Question 16

Which of the following symbols correctly represents a person who has a homozygous genotype?

Accepted Answer

A)  Ww 
B)  WW 
C)  XY 
D)  Wx 
A)  Ww 
B)  WW 
C)  XY 
D)  Wx

Question 17

A recessive allele can only appear in the phenotype of an individual

Accepted Answer

A)  in the F1 generation. 
B)  exposed to certain environmental conditions. 
C)  who carries the mutation in his or her gametes. 
D)  who is homozygous for the mutation. 
A)  in the F1 generation. 
B)  exposed to certain environmental conditions. 
C)  who carries the mutation in his or her gametes. 
D)  who is homozygous for the mutation.

Question 18

Which of the following pairs of words can be used correctly to describe alleles?

Accepted Answer

A)  dominant or recessive 
B)  homozygous or heterozygous 
C)  genotype and phenotype 
D)  codependent and mutation 
A)  dominant or recessive 
B)  homozygous or heterozygous 
C)  genotype and phenotype 
D)  codependent and mutation

Question 19

Scientists studying monogamy in prairie voles discover a single male prairie vole that displays infidelity toward its mate. Which of the following hypotheses might explain this behavior?

Accepted Answer

A)  This male must have learned infidelity from its father. 
B)  A mutation in this male causes him to produce fewer receptors for vasopressin. 
C)  This male must have more vasopressin receptors than normal prairie voles. 
D)  This male must have a longer version of the vasopressin receptor gene. 
A)  This male must have learned infidelity from its father. 
B)  A mutation in this male causes him to produce fewer receptors for vasopressin. 
C)  This male must have more vasopressin receptors than normal prairie voles. 
D)  This male must have a longer version of the vasopressin receptor gene.

Question 20

Temperature can affect phenotype.

Accepted Answer

A) True 
 B)False

Exam 10: Patterns of Inheritance

If two alleles for the same trait have an equal effect on the phenotype, the alleles are ___________.

A Punnett square is used to

There are no known exceptions to Mendel's law of independent assortment.

A mutation that occurs in a diploid cell can be inherited only if

What is the smallest number of traits that are needed to test Mendel's law of independent assortment?

If the D allele is completely dominant over the d allele, what percentage of the offspring will have the dominant phenotype when two heterozygous individuals mate?

Inheritance of ABO blood type in humans is an example of

The first generation of phenotypes resulting from a genetic cross between two members of the parental generation would be seen in the ____ generation.

A genotype is always expressed in the phenotype.

Which of the following expresses Mendel's law of segregation?

Mendel's laws were able to predict accurately the pattern of inheritance for situations in which

If an offspring has a total of 32 alleles, it inherited _____ alleles from each parent.

Each cell in a human contains a different set of genes.

Which of the following choices represents the genotype of an individual diploid organism?

Alternate versions of the same gene, such as blue or brown for eye color, are known as _______.

Which of the following symbols correctly represents a person who has a homozygous genotype?

A recessive allele can only appear in the phenotype of an individual

Which of the following pairs of words can be used correctly to describe alleles?

Scientists studying monogamy in prairie voles discover a single male prairie vole that displays infidelity toward its mate. Which of the following hypotheses might explain this behavior?

Temperature can affect phenotype.

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