Question 1

The figure shown below illustrates

Accepted Answer

A)  the law of independent assortment. 
B)  the law of segregation. 
C)  a dihybrid cross. 
D)  a monohybrid cross. 
A)  the law of independent assortment. 
B)  the law of segregation. 
C)  a dihybrid cross. 
D)  a monohybrid cross.

Question 2

In the Punnett square shown below,the lettered circles on the top and left of the square (indicated by the arrows)represent the

Accepted Answer

A)  offspring that will be produced by the cross. 
B)  genotypes of the parents involved in the cross. 
C)  gametes that may be produced by each parent involved in the cross. 
D)  offspring that could be produced by the cross. 
A)  offspring that will be produced by the cross. 
B)  genotypes of the parents involved in the cross. 
C)  gametes that may be produced by each parent involved in the cross. 
D)  offspring that could be produced by the cross.

Question 3

Which of the following did Mendel use to help him form the law of independent assortment?

Accepted Answer

A)  dihybrid crosses between pea plants 
B)  monohybrid crosses between pea plants 
C)  traits that were codominant 
D)  traits with incomplete dominance 
A)  dihybrid crosses between pea plants 
B)  monohybrid crosses between pea plants 
C)  traits that were codominant 
D)  traits with incomplete dominance

Question 4

One of the first medical tests a newborn receives determines if the child has phenylketonuria (PKU).PKU is the result of a mutation in a single gene that causes mental retardation and a host of other phenotypes (light hair and skin color,eczema,and a "mousy" smell).By detecting PKU early,doctors are able to reduce the effect of this condition with a modified diet.PKU is an example of

Accepted Answer

A)  epistasis. 
B)  a polygenic trait. 
C)  pleiotropy. 
D)  codominance. 
A)  epistasis. 
B)  a polygenic trait. 
C)  pleiotropy. 
D)  codominance.

Question 5

Most traits in humans involve complex inheritance where the trait is governed by the action of more than one ________.

Accepted Answer

The answer of Most traits in humans involve complex inheritance...

Question 6

Consider a gene with two alleles that show complete dominance.When two heterozygotes for this gene breed,they have a 25 percent chance of producing a homozygous recessive offspring.The next time these two individuals breed,what are the chances that they will once again have a homozygous recessive progeny?

Accepted Answer

A)  0 percent 
B)  25 percent 
C)  50 percent 
D)  75 percent 
A)  0 percent 
B)  25 percent 
C)  50 percent 
D)  75 percent

Question 7

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

Accepted Answer

A)  All dominant alleles of different genes divide into different cells from the recessive alleles. 
B)  Two alleles 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 divide into different cells from the recessive alleles. 
B)  Two alleles 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 8

The individual who used data from breeding garden peas to discover the patterns of inheritance that form the foundation of modern-day genetics was ________.

Accepted Answer

Gregor Men

Question 9

Is it possible for two organisms with the same genotype to have different phenotypes? Explain your answer.

Accepted Answer

Yes.The expression of the geno

Question 10

Mendel used ________ as his research organism to study patterns of genetic inheritance.

Accepted Answer

A)  garden peas 
B)  snapdragons 
C)  mice 
D)  Siamese cats 
A)  garden peas 
B)  snapdragons 
C)  mice 
D)  Siamese cats

Question 11

Which of the following statements is a basic summary of one of Mendel's laws?

Accepted Answer

A)  All beneficial human genetic traits are dominant,and harmful traits are recessive. 
B)  The pattern of inherited characteristics of organisms is not predictable. 
C)  The separation of alleles for one gene does not affect the separation of alleles for other
Genes. 
D)  Recessive alleles cause the death of the gamete. 
A)  All beneficial human genetic traits are dominant,and harmful traits are recessive. 
B)  The pattern of inherited characteristics of organisms is not predictable. 
C)  The separation of alleles for one gene does not affect the separation of alleles for other
Genes. 
D)  Recessive alleles cause the death of the gamete.

Question 12

Which of the following statements is NOT true?

Accepted Answer

A)  Two organisms with the same phenotype may have different genotypes. 
B)  Two organisms with the same genotype are homozygous. 
C)  A heterozygous organism may have the same phenotype as a homozygous organism. 
D)  A heterozygous organism has fewer alleles for a given gene than a homozygous organism. 
A)  Two organisms with the same phenotype may have different genotypes. 
B)  Two organisms with the same genotype are homozygous. 
C)  A heterozygous organism may have the same phenotype as a homozygous organism. 
D)  A heterozygous organism has fewer alleles for a given gene than a homozygous organism.

Question 13

In a genetic cross of Gg with Gg guinea pigs,none of the four offspring were gg.This

Accepted Answer

A)  disproves Mendel's law of independent assortment. 
B)  neither supports nor disproves Mendel's law of independent assortment. 
C)  supports Mendel's law of independent assortment. 
D)  supports Mendel's law of segregation. 
A)  disproves Mendel's law of independent assortment. 
B)  neither supports nor disproves Mendel's law of independent assortment. 
C)  supports Mendel's law of independent assortment. 
D)  supports Mendel's law of segregation.

Question 14

A Thoroughbred racehorse could have at most ________ alleles of the same gene.

Accepted Answer

A)  16 
B)  8 
C)  4 
D)  2 
A)  16 
B)  8 
C)  4 
D)  2

Question 15

The pleiotropy that occurs when a single gene controls multiple skeletal traits in dogs,such as leg bone length and skull size,may be explained because

Accepted Answer

A)  dogs share a common ancestor. 
B)  the skeletal traits are related in the overall function of the dog. 
C)  dogs have lived with humans for thousands of years. 
D)  the effect of this gene depends on the environment. 
A)  dogs share a common ancestor. 
B)  the skeletal traits are related in the overall function of the dog. 
C)  dogs have lived with humans for thousands of years. 
D)  the effect of this gene depends on the environment.

Question 16

Two organisms that are true-breeding for a certain genetic characteristic are mated and their offspring analyzed.Which of the following statements about this situation is true?

Accepted Answer

A)  Both parents are heterozygotes. 
B)  The offspring are either 100 percent homozygotes or 100 percent heterozygotes. 
C)  The offspring represent the P generation. 
D)  The gametes produced by the offspring will carry two alleles for this gene. 
A)  Both parents are heterozygotes. 
B)  The offspring are either 100 percent homozygotes or 100 percent heterozygotes. 
C)  The offspring represent the P generation. 
D)  The gametes produced by the offspring will carry two alleles for this gene.

Question 17

Which of the following statements regarding genes is NOT true?

Accepted Answer

A)  Genes are located on chromosomes. 
B)  Genes consist of a long sequence of DNA. 
C)  Genes are the basic unit of information affecting a genetic trait. 
D)  Genes are found as single copies in cells other than sperm or egg. 
A)  Genes are located on chromosomes. 
B)  Genes consist of a long sequence of DNA. 
C)  Genes are the basic unit of information affecting a genetic trait. 
D)  Genes are found as single copies in cells other than sperm or egg.

Question 18

It would become nearly impossible to predict the phenotype of an individual with a known genotype if the

Accepted Answer

A)  environment affects the phenotype. 
B)  genotype of the parents is unknown. 
C)  genotype of offspring is unknown. 
D)  You should always be able to predict the phenotype if you know the genotype. 
A)  environment affects the phenotype. 
B)  genotype of the parents is unknown. 
C)  genotype of offspring is unknown. 
D)  You should always be able to predict the phenotype if you know the genotype.

Question 19

Most human genetic characters are

Accepted Answer

A)  controlled by one gene. 
B)  not inherited according to Mendel's laws. 
C)  controlled by more than one gene. 
D)  not heritable. 
A)  controlled by one gene. 
B)  not inherited according to Mendel's laws. 
C)  controlled by more than one gene. 
D)  not heritable.

Question 20

In humans there are three blood type alleles: A,B,and O.The blood type alleles A and B are fully expressed when they are present.Neither allele is considered dominant or recessive and neither is diluted when both alleles are present.The allele O is considered recessive and indicates a lack of either the A or B allele.How many blood type alleles are found in a given individual? What are the possible genotypes of an individual with type A blood in which only the A allele is expressed?

Accepted Answer

For any given gene,including blood type,

The figure shown below illustrates

In the Punnett square shown below,the lettered circles on the top and left of the square (indicated by the arrows)represent the

Which of the following did Mendel use to help him form the law of independent assortment?

Most traits in humans involve complex inheritance where the trait is governed by the action of more than one ________.

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

The individual who used data from breeding garden peas to discover the patterns of inheritance that form the foundation of modern-day genetics was ________.

Is it possible for two organisms with the same genotype to have different phenotypes? Explain your answer.

Mendel used ________ as his research organism to study patterns of genetic inheritance.

Which of the following statements is a basic summary of one of Mendel's laws?

Which of the following statements is NOT true?

In a genetic cross of Gg with Gg guinea pigs,none of the four offspring were gg.This

A Thoroughbred racehorse could have at most ________ alleles of the same gene.

The pleiotropy that occurs when a single gene controls multiple skeletal traits in dogs,such as leg bone length and skull size,may be explained because

Two organisms that are true-breeding for a certain genetic characteristic are mated and their offspring analyzed.Which of the following statements about this situation is true?

Which of the following statements regarding genes is NOT true?

It would become nearly impossible to predict the phenotype of an individual with a known genotype if the

Most human genetic characters are

The Nature of Science

Evaluating Scientific Claims

Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Bacteria and Archaea

Plants,fungi,and Protists

Animals and Human Evolution

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Exam 7: Patterns of Inheritance

The figure shown below illustrates

In the Punnett square shown below,the lettered circles on the top and left of the square (indicated by the arrows)represent the

Which of the following did Mendel use to help him form the law of independent assortment?

Most traits in humans involve complex inheritance where the trait is governed by the action of more than one ________.

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

The individual who used data from breeding garden peas to discover the patterns of inheritance that form the foundation of modern-day genetics was ________.

Is it possible for two organisms with the same genotype to have different phenotypes? Explain your answer.

Mendel used ________ as his research organism to study patterns of genetic inheritance.

Which of the following statements is a basic summary of one of Mendel's laws?

Which of the following statements is NOT true?

In a genetic cross of Gg with Gg guinea pigs,none of the four offspring were gg.This

A Thoroughbred racehorse could have at most ________ alleles of the same gene.

The pleiotropy that occurs when a single gene controls multiple skeletal traits in dogs,such as leg bone length and skull size,may be explained because

Two organisms that are true-breeding for a certain genetic characteristic are mated and their offspring analyzed.Which of the following statements about this situation is true?

Which of the following statements regarding genes is NOT true?

It would become nearly impossible to predict the phenotype of an individual with a known genotype if the

Most human genetic characters are

The Nature of Science

Evaluating Scientific Claims

Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Bacteria and Archaea

Plants,fungi,and Protists

Animals and Human Evolution

Filters