Question 1

A gene that affects flower color,root length,and leaf shape is pleiotropic.

Accepted Answer

A) True 
 B)False

Question 2

Autosomes

Accepted Answer

A)  are chromosomes that are the same for both sexes. 
B)  include the Y chromosome in humans. 
C)  include the X chromosome in humans. 
D)  are the sex chromosomes. 
E)  All answers are correct. 
A)  are chromosomes that are the same for both sexes. 
B)  include the Y chromosome in humans. 
C)  include the X chromosome in humans. 
D)  are the sex chromosomes. 
E)  All answers are correct.

Question 3

In the ABO blood type system the alleles Iᴬ,Iᴮ,and i produce

Accepted Answer

A)  three phenotypes. 
B)  two phenotypes. 
C)  one phenotype. 
D)  four phenotypes. 
E)  type A and type B blood types only. 
A)  three phenotypes. 
B)  two phenotypes. 
C)  one phenotype. 
D)  four phenotypes. 
E)  type A and type B blood types only.

Question 4

Place the following events in the correct order in which they occur: fertilization,haploid gametes produced,meiosis of diploid cell,and new diploid organism formed.

Accepted Answer

A)  meiosis of diploid cell, haploid gametes produced, fertilization, new diploid organism formed 
B)  haploid gametes produced, fertilization, meiosis of diploid cell, new diploid organism formed 
C)  fertilization, haploid gametes produced, new diploid organism formed, meiosis of diploid cell 
D)  meiosis of diploid cell, new diploid organism formed, haploid gametes produced, fertilization 
E)  haploid gametes produced, new diploid organism formed, fertilization, meiosis of diploid cell 
A)  meiosis of diploid cell, haploid gametes produced, fertilization, new diploid organism formed 
B)  haploid gametes produced, fertilization, meiosis of diploid cell, new diploid organism formed 
C)  fertilization, haploid gametes produced, new diploid organism formed, meiosis of diploid cell 
D)  meiosis of diploid cell, new diploid organism formed, haploid gametes produced, fertilization 
E)  haploid gametes produced, new diploid organism formed, fertilization, meiosis of diploid cell

Question 5

In an inherited form of high cholesterol,HH individuals have a blood cholesterol level greater than 500mg/dL,RH individuals are near 300mg/dL,and normal (RR)cholesterol levels should be less than 200mg/dL.The H allele is ________ to the R allele.

Accepted Answer

A)  codominant 
B)  dominant 
C)  recessive 
D)  homozygous 
E)  incompletely dominant 
A)  codominant 
B)  dominant 
C)  recessive 
D)  homozygous 
E)  incompletely dominant

Question 6

Adult female bollworm moths lay eggs on cotton bolls.These eggs then hatch and grow into caterpillars that eat the seeds of the boll.The eggs and sperm are produced by

Accepted Answer

A)  meiosis. 
B)  mitosis. 
C)  fertilization. 
D)  crossing over. 
E)  mutation. 
A)  meiosis. 
B)  mitosis. 
C)  fertilization. 
D)  crossing over. 
E)  mutation.

Question 7

If the two alleles for a particular gene are different the gene pair is

Accepted Answer

A)  homologous. 
B)  heterozygous. 
C)  homozygous. 
D)  dominant. 
E)  recessive. 
A)  homologous. 
B)  heterozygous. 
C)  homozygous. 
D)  dominant. 
E)  recessive.

Question 8

Crossing over is more likely to separate genes on a chromosome if they are

Accepted Answer

A)  close together. 
B)  far apart. 
C)  recessive genes. 
D)  dominant genes. 
E)  mutated genes. 
A)  close together. 
B)  far apart. 
C)  recessive genes. 
D)  dominant genes. 
E)  mutated genes.

Question 9

If any of the traits that Mendel worked with were linked genes,his dihybrid crosses would have

Accepted Answer

A)  not yielded the phenotypic ratio of 9:3:3:1. 
B)  produced more offspring. 
C)  produced fewer offspring. 
D)  exhibited the phenotypic ratio of 9:3:3:1. 
E)  produced sterile offspring. 
A)  not yielded the phenotypic ratio of 9:3:3:1. 
B)  produced more offspring. 
C)  produced fewer offspring. 
D)  exhibited the phenotypic ratio of 9:3:3:1. 
E)  produced sterile offspring.

Question 10

Each gamete arises from a diploid cell containing two sets of homologous chromosomes.

Accepted Answer

A) True 
 B)False

Question 11

In the study of genetics,the offspring of the P generation are referred to as the

Accepted Answer

A)  wild type generation. 
B)  F1 generation. 
C)  genotype. 
D)  F2 generation. 
E)  phenotype. 
A)  wild type generation. 
B)  F1 generation. 
C)  genotype. 
D)  F2 generation. 
E)  phenotype.

Question 12

Genotypes are the outward expression of an allele combination.

Accepted Answer

A) True 
 B)False

Question 13

An example of a monohybrid cross would be

Accepted Answer

A)  an individual that is homozygous dominant for one trait undergoing self-fertilization. 
B)  a mating between two individuals that are heterozygous for two traits. 
C)  an individual that is homozygous recessive for one trait undergoing self-fertilization. 
D)  a mating between two individuals that are heterozygous for one trait. 
E)  an individual that is homozygous recessive for two traits undergoing self-fertilization. 
A)  an individual that is homozygous dominant for one trait undergoing self-fertilization. 
B)  a mating between two individuals that are heterozygous for two traits. 
C)  an individual that is homozygous recessive for one trait undergoing self-fertilization. 
D)  a mating between two individuals that are heterozygous for one trait. 
E)  an individual that is homozygous recessive for two traits undergoing self-fertilization.

Question 14

When Mendel crossed short (tt)pea plants with short (tt)pea plants the offspring

Accepted Answer

A)  were all tall. 
B)  were a mix of tall and short. 
C)  were nonexistent. 
D)  were all short. 
E)  No answer is correct. 
A)  were all tall. 
B)  were a mix of tall and short. 
C)  were nonexistent. 
D)  were all short. 
E)  No answer is correct.

Question 15

Which gametes can a RRyy plant produce?

Accepted Answer

A)  RR or yy 
B)  Ry 
C)  RY or ry 
D)  RRyy 
E)  R or y 
A)  RR or yy 
B)  Ry 
C)  RY or ry 
D)  RRyy 
E)  R or y

Question 16

Recessive alleles seem to vanish in some generations and reappear in later generations because they

Accepted Answer

A)  cannot be expressed in males. 
B)  are masked by a dominant allele. 
C)  cannot be expressed in females. 
D)  cannot be expressed in successive generations. 
E)  are lost by mutation. 
A)  cannot be expressed in males. 
B)  are masked by a dominant allele. 
C)  cannot be expressed in females. 
D)  cannot be expressed in successive generations. 
E)  are lost by mutation.

Question 17

X-linked recessive disorders affect more females than males.

Accepted Answer

A) True 
 B)False

Question 18

If X inactivation fails,this is a good thing as it is an error of meiosis.

Accepted Answer

A) True 
 B)False

Question 19

A pea plant with (Tt)as its genotype should be referred to as

Accepted Answer

A)  the wild type. 
B)  homozygous dominant. 
C)  heterozygous. 
D)  homozygous recessive. 
E)  mutant. 
A)  the wild type. 
B)  homozygous dominant. 
C)  heterozygous. 
D)  homozygous recessive. 
E)  mutant.

Question 20

In these data, the parental generation characteristics (resistant or susceptible) are shown at the top.
  
-In this figure,the genotype of the resistant parental bollworms is ________ while the susceptible parental bollworms have a ________ genotype.

Accepted Answer

A)  rr; RR 
B)  RR; rr 
C)  Rr; rr 
D)  RR; Rr 
E)  Rr; RR 
A)  rr; RR 
B)  RR; rr 
C)  Rr; rr 
D)  RR; Rr 
E)  Rr; RR

Exam 10: Patterns of Inheritance

A gene that affects flower color,root length,and leaf shape is pleiotropic.

Autosomes

In the ABO blood type system the alleles Iᴬ,Iᴮ,and i produce

Place the following events in the correct order in which they occur: fertilization,haploid gametes produced,meiosis of diploid cell,and new diploid organism formed.

In an inherited form of high cholesterol,HH individuals have a blood cholesterol level greater than 500mg/dL,RH individuals are near 300mg/dL,and normal (RR)cholesterol levels should be less than 200mg/dL.The H allele is ________ to the R allele.

Adult female bollworm moths lay eggs on cotton bolls.These eggs then hatch and grow into caterpillars that eat the seeds of the boll.The eggs and sperm are produced by

If the two alleles for a particular gene are different the gene pair is

Crossing over is more likely to separate genes on a chromosome if they are

If any of the traits that Mendel worked with were linked genes,his dihybrid crosses would have

Each gamete arises from a diploid cell containing two sets of homologous chromosomes.

In the study of genetics,the offspring of the P generation are referred to as the

Genotypes are the outward expression of an allele combination.

An example of a monohybrid cross would be

When Mendel crossed short (tt)pea plants with short (tt)pea plants the offspring

Which gametes can a RRyy plant produce?

Recessive alleles seem to vanish in some generations and reappear in later generations because they

X-linked recessive disorders affect more females than males.

If X inactivation fails,this is a good thing as it is an error of meiosis.

A pea plant with (Tt)as its genotype should be referred to as

In these data, the parental generation characteristics (resistant or susceptible) are shown at the top. -In this figure,the genotype of the resistant parental bollworms is ________ while the susceptible parental bollworms have a ________ genotype.

The Scientific Study of Life

The Chemistry of Life

Cells

The Energy of Life

Photosynthesis

Respiration and Fermentation

DNA Structure and Gene Function

DNA Replication,Binary Fission,and Mitosis

Sexual Reproduction and Meiosis

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Populations

Communities and Ecosystems

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

The Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

The Digestive and Urinary Systems

The Immune System

Animal Reproduction and Development

Filters

In these data, the parental generation characteristics (resistant or susceptible) are shown at the top. -In this figure,the genotype of the resistant parental bollworms is while the susceptible parental bollworms have a genotype.