Question 1

If an offspring of two diploid parents carries a total of 32 different genes,it inherited ________ genes from each of those parents.

Accepted Answer

32

Question 2

A genotype is always expressed in the phenotype.

Accepted Answer

A) True 
 B)False  False

Question 3

Feather color in a certain species of bird is controlled by a pair of alleles that exhibit incomplete dominance.If birds that are homozygous for one allele are black and birds that are homozygous for the other allele are white,then heterozygous birds would be

Accepted Answer

A)  black. 
B)  white. 
C)  gray. 
D)  black with white stripes. 
A)  black. 
B)  white. 
C)  gray. 
D)  black with white stripes. C

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

A genetic cross is used to produce organisms from species that would not normally interbreed.

Accepted Answer

A) True 
 B)False

Question 6

Is it possible for two organisms with the same genotype to have different phenotypes?

Accepted Answer

A)  No; identical genotypes lead to identical phenotypes. 
B)  No; the DNA of the recessive alleles not expressed in the phenotype is degraded within each cell. 
C)  Yes; the expression of the genotype can be affected by the environment. 
D)  Yes; the phenotype expressed determines what the genotype will be. 
A)  No; identical genotypes lead to identical phenotypes. 
B)  No; the DNA of the recessive alleles not expressed in the phenotype is degraded within each cell. 
C)  Yes; the expression of the genotype can be affected by the environment. 
D)  Yes; the phenotype expressed determines what the genotype will be.

Question 7

When gametes are formed,the separation of alleles for one gene is unrelated to the separation of alleles for other genes.This idea is known as Mendel's law of ________.

Accepted Answer

independen

Question 8

If a person has one copy of each of two different alleles for a given gene,the person is ________ for that trait.

Accepted Answer

A)  heterozygous 
B)  homozygous 
C)  recessive 
D)  true-breeding 
A)  heterozygous 
B)  homozygous 
C)  recessive 
D)  true-breeding

Question 9

If both copies of a given gene in an organism are identical,the organism is homozygous for that trait.

Accepted Answer

A) True 
 B)False

Question 10

Inheritance of ABO blood type in humans is an example of

Accepted Answer

A)  incomplete dominance. 
B)  complete dominance of one allele over another. 
C)  a gene that is coded by only one allele. 
D)  epistasis. 
A)  incomplete dominance. 
B)  complete dominance of one allele over another. 
C)  a gene that is coded by only one allele. 
D)  epistasis.

Question 11

Most traits are under the control of more than one gene.

Accepted Answer

A) True 
 B)False

Question 12

Before Gregor Mendel,it was believed that offspring should be intermediate in phenotype to their two parents and that it should be impossible for "lost" traits to reappear in later generations.This idea was known as ________ inheritance.

Accepted Answer

The answer of Before Gregor Mendel,it was believed that offspring...

Question 13

Chromosomes are located on genes.

Accepted Answer

A) True 
 B)False

Question 14

Each time a person has another child,the chance that the parent passes on a given allele to a child

Accepted Answer

A)  is reduced. 
B)  is increased. 
C)  is the same. 
D)  changes. 
A)  is reduced. 
B)  is increased. 
C)  is the same. 
D)  changes.

Question 15

The lettered fragment indicated by the black arrow in the following image is the part of a chromosome responsible for encoding and producing one of the molecules that ultimately determines one or more of the phenotypes of an individual.These phenotype-determining molecules are known as ________.

Accepted Answer

The answer of The lettered fragment indicated by the black...

Question 16

Which of the following statements is true?

Accepted Answer

A)  Mendel's laws are less accurate than Punnett square results. 
B)  Mendel's laws are useful only in unusual situations. 
C)  Mendel's laws correctly explain how genes are inherited. 
D)  Mendel's laws correctly predict the phenotype of an organism. 
A)  Mendel's laws are less accurate than Punnett square results. 
B)  Mendel's laws are useful only in unusual situations. 
C)  Mendel's laws correctly explain how genes are inherited. 
D)  Mendel's laws correctly predict the phenotype of an organism.

Question 17

Which of the following observations refutes the theory of blending inheritance?

Accepted Answer

A)  When a red plant is crossed with a white plant, the resulting offspring are pink. 
B)  Most of the features of offspring are not intermediates of their parents' traits. 
C)  Gametes carrying different types of alleles cannot fuse successfully. 
D)  After meiosis, two copies of a given gene end up in the same gamete. 
A)  When a red plant is crossed with a white plant, the resulting offspring are pink. 
B)  Most of the features of offspring are not intermediates of their parents' traits. 
C)  Gametes carrying different types of alleles cannot fuse successfully. 
D)  After meiosis, two copies of a given gene end up in the same gamete.

Question 18

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 19

A genetic cross in which the heterozygous phenotype is intermediate between the two homozygous phenotypes is an example of ________.

Accepted Answer

incomplete

Question 20

Which of the following statements is true?

Accepted Answer

A)  Specific mutations occur because they are needed. 
B)  Mutations only occur during development. 
C)  All mutations are harmful. 
D)  Gametes fuse without regard to which mutations they carry. 
A)  Specific mutations occur because they are needed. 
B)  Mutations only occur during development. 
C)  All mutations are harmful. 
D)  Gametes fuse without regard to which mutations they carry.

Exam 9: Patterns of Inheritance

If an offspring of two diploid parents carries a total of 32 different genes,it inherited ________ genes from each of those parents.

A genotype is always expressed in the phenotype.

Feather color in a certain species of bird is controlled by a pair of alleles that exhibit incomplete dominance.If birds that are homozygous for one allele are black and birds that are homozygous for the other allele are white,then heterozygous birds would be

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

A genetic cross is used to produce organisms from species that would not normally interbreed.

Is it possible for two organisms with the same genotype to have different phenotypes?

When gametes are formed,the separation of alleles for one gene is unrelated to the separation of alleles for other genes.This idea is known as Mendel's law of ________.

If a person has one copy of each of two different alleles for a given gene,the person is ________ for that trait.

If both copies of a given gene in an organism are identical,the organism is homozygous for that trait.

Inheritance of ABO blood type in humans is an example of

Most traits are under the control of more than one gene.

Before Gregor Mendel,it was believed that offspring should be intermediate in phenotype to their two parents and that it should be impossible for "lost" traits to reappear in later generations.This idea was known as ________ inheritance.

Chromosomes are located on genes.

Each time a person has another child,the chance that the parent passes on a given allele to a child

The lettered fragment indicated by the black arrow in the following image is the part of a chromosome responsible for encoding and producing one of the molecules that ultimately determines one or more of the phenotypes of an individual.These phenotype-determining molecules are known as ________.

Which of the following statements is true?

Which of the following observations refutes the theory of blending inheritance?

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

A genetic cross in which the heterozygous phenotype is intermediate between the two homozygous phenotypes is an example of ________.

Which of the following statements is true?

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