Question 1

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 2

According to Mendel's law of ________,when gametes are formed,the separation of alleles for one gene is unrelated to the separation of alleles for other genes.

Accepted Answer

independen

Question 3

A chestnut-colored horse is mated with a cremello (cream-colored)horse.Over a 10-year period,all of their offspring are palominos.This pattern of inheritance is best explained by

Accepted Answer

A) complete dominance. 
B) incomplete dominance. 
C) multiple gene effects. 
D) environmental effects on genes. 
A) complete dominance. 
B) incomplete dominance. 
C) multiple gene effects. 
D) environmental effects on genes.

Question 4

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 5

A pea plant that is heterozygous for the flower color gene makes gametes.What is the probability that a specific gamete contains the recessive allele for flower color?

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 6

A dihybrid cross of fruit flies is used to examine inheritance patterns for eye color (black or white)and head shape (round or elongated).This cross produces 10,000 offspring,and the ratio is 1 (black eyes,round head): 1 (black eyes,elongated head): 1 (white eyes,round head): 1 (white eyes,elongated head).Is this what you would expect from a dihybrid cross? Explain your answer.

Accepted Answer

No.The pattern predicted by the law of i

Question 7

MATCHING
Match each mode of inheritance to a statement listed below.
-The frizzle gene in chickens affects many traits,including feather type,metabolic rate,blood flow rates,and digestion.

Accepted Answer

A) incomplete dominance 
B) epistasis 
C) polygenic 
D) pleiotropy 
E) codominance
F)Mendelian trait 
A) incomplete dominance 
B) epistasis 
C) polygenic 
D) pleiotropy 
E) codominance
F)Mendelian trait

Question 8

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 9

Which of the following statements is true of Mendel's laws?

Accepted Answer

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

Question 10

The figure shown indicates two Labrador retrievers that are both homozygous recessive for fur color.Why is one dog brown and the other is yellow?

Accepted Answer

A) This is an example of pleiotropy. 
B) This is an example of codominance. 
C) This is an example of epistasis. 
D) This is an example of incomplete dominance. 
A) This is an example of pleiotropy. 
B) This is an example of codominance. 
C) This is an example of epistasis. 
D) This is an example of incomplete dominance.

Question 11

Which of the following is true for mutations?

Accepted Answer

A) Mutations will affect the genotype without affecting the phenotype. 
B) Mutations will affect the phenotype without affecting the genotype. 
C) Mutations will affect the genotype,which may affect the phenotype. 
D) Mutations will affect the phenotype,which may affect the genotype. 
A) Mutations will affect the genotype without affecting the phenotype. 
B) Mutations will affect the phenotype without affecting the genotype. 
C) Mutations will affect the genotype,which may affect the phenotype. 
D) Mutations will affect the phenotype,which may affect the genotype.

Question 12

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 13

MATCHING
Match each mode of inheritance to a statement listed below.
-The color of wheat kernels is controlled by the interaction of two separate genes with one gene affecting the expression of the other gene.

Accepted Answer

A) incomplete dominance 
B) epistasis 
C) polygenic 
D) pleiotropy 
E) codominance
F)Mendelian trait 
A) incomplete dominance 
B) epistasis 
C) polygenic 
D) pleiotropy 
E) codominance
F)Mendelian trait

Question 14

An allele is

Accepted Answer

A) a version of a gene. 
B) a trait that can be affected by the external environment. 
C) always codominant to its counterpart in another chromosome. 
D) the result of a change in phenotype. 
A) a version of a gene. 
B) a trait that can be affected by the external environment. 
C) always codominant to its counterpart in another chromosome. 
D) the result of a change in phenotype.

Question 15

MATCHING
Match each mode of inheritance to a statement listed below.
-A human's ability to roll their tongue is dependent on a single gene that is either dominant or recessive.

Accepted Answer

A) incomplete dominance 
B) epistasis 
C) polygenic 
D) pleiotropy 
E) codominance
F)Mendelian trait 
A) incomplete dominance 
B) epistasis 
C) polygenic 
D) pleiotropy 
E) codominance
F)Mendelian trait

Question 16

Which of the following did Gregor Mendel notice in garden peas?

Accepted Answer

A) Some plants always produced offspring with flowers that were the same color as the parent plant's flowers. 
B) The first generation from a genetic cross of true-breeding plants always produced offspring that were intermediate in their phenotype and did not look like either parent. 
C) Garden peas always produce a variety of phenotypes in their offspring,which result from frequent mutations. 
D) Any individual pea plant carries at least three different alleles for flower color. 
A) Some plants always produced offspring with flowers that were the same color as the parent plant's flowers. 
B) The first generation from a genetic cross of true-breeding plants always produced offspring that were intermediate in their phenotype and did not look like either parent. 
C) Garden peas always produce a variety of phenotypes in their offspring,which result from frequent mutations. 
D) Any individual pea plant carries at least three different alleles for flower color.

Question 17

If Gregor Mendel had studied a polygenic trait that did not follow the straightforward single-gene,single-phenotype pattern,do you believe he would have been able to describe how genes are passed from parents to offspring? Justify your answer.

Accepted Answer

No.Studying traits with dominant and rec

Question 18

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 19

Which of the following does NOT represent a phenotype?

Accepted Answer

A) a person's susceptibility to Addison's disease 
B) the height of a draft horse 
C) the alleles in a mouse that control hair color 
D) the extent to which an individual is shy 
A) a person's susceptibility to Addison's disease 
B) the height of a draft horse 
C) the alleles in a mouse that control hair color 
D) the extent to which an individual is shy

Question 20

Which of the following is the mechanism described by Mendel that results in a new combination of alleles in a pea plant seed?

Accepted Answer

A) the mutation of multiple alleles during mitosis 
B) the mutation of multiple alleles during meiosis 
C) the separation of alleles for two different genes during meiosis 
D) the separation of alleles for a single gene during meiosis 
A) the mutation of multiple alleles during mitosis 
B) the mutation of multiple alleles during meiosis 
C) the separation of alleles for two different genes during meiosis 
D) the separation of alleles for a single gene during meiosis

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

According to Mendel's law of ________,when gametes are formed,the separation of alleles for one gene is unrelated to the separation of alleles for other genes.

A chestnut-colored horse is mated with a cremello (cream-colored)horse.Over a 10-year period,all of their offspring are palominos.This pattern of inheritance is best explained by

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

A pea plant that is heterozygous for the flower color gene makes gametes.What is the probability that a specific gamete contains the recessive allele for flower color?

MATCHING Match each mode of inheritance to a statement listed below. -The frizzle gene in chickens affects many traits,including feather type,metabolic rate,blood flow rates,and digestion.

Which of the following statements is NOT true?

Which of the following statements is true of Mendel's laws?

The figure shown indicates two Labrador retrievers that are both homozygous recessive for fur color.Why is one dog brown and the other is yellow?

Which of the following is true for mutations?

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?

MATCHING Match each mode of inheritance to a statement listed below. -The color of wheat kernels is controlled by the interaction of two separate genes with one gene affecting the expression of the other gene.

An allele is

MATCHING Match each mode of inheritance to a statement listed below. -A human's ability to roll their tongue is dependent on a single gene that is either dominant or recessive.

Which of the following did Gregor Mendel notice in garden peas?

If Gregor Mendel had studied a polygenic trait that did not follow the straightforward single-gene,single-phenotype pattern,do you believe he would have been able to describe how genes are passed from parents to offspring? Justify your answer.

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

Which of the following does NOT represent a phenotype?

Which of the following is the mechanism described by Mendel that results in a new combination of alleles in a pea plant seed?

The Nature of Science

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

Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Ecosystems

Applying the Science

Filters

Exam 6: Patterns of Inheritance

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

According to Mendel's law of ________,when gametes are formed,the separation of alleles for one gene is unrelated to the separation of alleles for other genes.

A chestnut-colored horse is mated with a cremello (cream-colored)horse.Over a 10-year period,all of their offspring are palominos.This pattern of inheritance is best explained by

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

A pea plant that is heterozygous for the flower color gene makes gametes.What is the probability that a specific gamete contains the recessive allele for flower color?

MATCHING Match each mode of inheritance to a statement listed below. -The frizzle gene in chickens affects many traits,including feather type,metabolic rate,blood flow rates,and digestion.

Which of the following statements is NOT true?

Which of the following statements is true of Mendel's laws?

The figure shown indicates two Labrador retrievers that are both homozygous recessive for fur color.Why is one dog brown and the other is yellow?

Which of the following is true for mutations?

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?

MATCHING Match each mode of inheritance to a statement listed below. -The color of wheat kernels is controlled by the interaction of two separate genes with one gene affecting the expression of the other gene.

An allele is

MATCHING Match each mode of inheritance to a statement listed below. -A human's ability to roll their tongue is dependent on a single gene that is either dominant or recessive.

Which of the following did Gregor Mendel notice in garden peas?

If Gregor Mendel had studied a polygenic trait that did not follow the straightforward single-gene,single-phenotype pattern,do you believe he would have been able to describe how genes are passed from parents to offspring? Justify your answer.

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

Which of the following does NOT represent a phenotype?

Which of the following is the mechanism described by Mendel that results in a new combination of alleles in a pea plant seed?

The Nature of Science

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

Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Ecosystems

Applying the Science

Filters