Question 1

Four of the following will stimulate the production of males in water fleas. Which one is the exception?

Accepted Answer

A)  ​spring 
B)  ​warm water 
C)  ​salty water 
D)  ​high competition for resources 
E)  ​crowding 
A)  ​spring 
B)  ​warm water 
C)  ​salty water 
D)  ​high competition for resources 
E)  ​crowding

Question 2

Diet, stress, and exercise can all impact

Accepted Answer

A)  ​the development of all autosomal disorders. 
B)  ​the development of autosomal recessive disorders. 
C)  ​the development of autosomal dominant disorders. 
D)  ​multiple allele systems. 
E)  ​DNA methylation patterns. 
A)  ​the development of all autosomal disorders. 
B)  ​the development of autosomal recessive disorders. 
C)  ​the development of autosomal dominant disorders. 
D)  ​multiple allele systems. 
E)  ​DNA methylation patterns.

Question 3

In humans, normal skin pigmentation is influenced by a dominant gene (C), which allows pigmentation to develop. All individuals who are homozygous for the recessive allele (c) are unable to produce an enzyme needed for melanin formation and are therefore referred to as albino. Two normal parents produce an albino child. What are the chances that the next child will be an albino?

Accepted Answer

The answer of In humans, normal skin pigmentation is influenced...

Question 4

Which statement most completely describes why the pea plant was an excellent choice for Mendel's experiments?

Accepted Answer

A)  ​True-breeding varieties were available. 
B)  ​The plant can self-fertilize. 
C)  ​The plant can be cross-fertilized. 
D)  ​True-breeding varieties were available, and it can be cross-fertilized. 
E)  ​True-breeding varieties were available, the plant can self-fertilize, and it can be cross-fertilized. 
A)  ​True-breeding varieties were available. 
B)  ​The plant can self-fertilize. 
C)  ​The plant can be cross-fertilized. 
D)  ​True-breeding varieties were available, and it can be cross-fertilized. 
E)  ​True-breeding varieties were available, the plant can self-fertilize, and it can be cross-fertilized.

Question 5

An individual that has two dominant alleles for a trait (AA) is __________.

Accepted Answer

The answer of An individual that has two dominant alleles...

Question 6

Matching
Answer the following questions using the group of answers below.
-In a dihybrid cross between a parent that is a double heterozygote (Aa Bb) and a parent that is a double homozygous recessive (aa bb), how many unique phenotypes potentially will be present in their offspring?

Accepted Answer

A) 4 
B) 6 
C) 8 
D) 12 
E) 24 
A) 4 
B) 6 
C) 8 
D) 12 
E) 24

Question 7

Pleiotropic genes ____.

Accepted Answer

A)  ​act on secondary sexual characteristics 
B)  ​influence more than one aspect of phenotype 
C)  ​are additive 
D)  ​produce lethal effects when homozygous 
E)  ​can only affect one trait or characteristic at a time 
A)  ​act on secondary sexual characteristics 
B)  ​influence more than one aspect of phenotype 
C)  ​are additive 
D)  ​produce lethal effects when homozygous 
E)  ​can only affect one trait or characteristic at a time

Question 8

Which of the following is TRUE of cystic fibrosis?

Accepted Answer

A)  It results in reduced mucus production.​ 
B)  ​It leads to increased bacterial lung infections. 
C)  ​It affects the amino acid alanine. 
D)  ​It causes excess water to leave the cells. 
E)  ​It most often affects the liver. 
A)  It results in reduced mucus production.​ 
B)  ​It leads to increased bacterial lung infections. 
C)  ​It affects the amino acid alanine. 
D)  ​It causes excess water to leave the cells. 
E)  ​It most often affects the liver.

Question 9

Explain how incomplete dominance can result in an apparent "blend."

Accepted Answer

With incomplete dominance, one allele is

Question 10

In which of the following does the environment play a causal role?

Accepted Answer

A)  Marfan syndrome 
B)  cystic fibrosis 
C)  dog coat color 
D)  sickle-cell anemia 
E)  depression and schizophrenia 
A)  Marfan syndrome 
B)  cystic fibrosis 
C)  dog coat color 
D)  sickle-cell anemia 
E)  depression and schizophrenia

Question 11

A species is found to exist in one of three colors. Assuming an epistatic interaction, how many genes would be involved?

Accepted Answer

A)  ​zero 
B)  ​one 
C)  ​two 
D)  ​three 
E)  ​six 
A)  ​zero 
B)  ​one 
C)  ​two 
D)  ​three 
E)  ​six

Question 12

The offspring of a cross between two individuals that breed true for different forms of a trait are __________.

Accepted Answer

The answer of The offspring of a cross between two...

Question 13

Which eye color has dense melanin deposits in the iris?

Accepted Answer

A)  ​blue 
B)  ​gray 
C)  ​brown 
D)  ​green 
E)  ​brown and blue 
A)  ​blue 
B)  ​gray 
C)  ​brown 
D)  ​green 
E)  ​brown and blue

Question 14

A gene locus is

Accepted Answer

A)  ​a recessive gene. 
B)  ​an unmatched allele. 
C)  a sex chromosome.​ 
D)  ​the location of a gene on a chromosome. 
E)  ​a dominant gene. 
A)  ​a recessive gene. 
B)  ​an unmatched allele. 
C)  a sex chromosome.​ 
D)  ​the location of a gene on a chromosome. 
E)  ​a dominant gene.

Question 15

Which of the following is associated with Marfan syndrome?

Accepted Answer

A)  ​lanky, loose jointed skeleton 
B)  ​reduced eye sight 
C)  ​calcium deposits in the liver 
D)  ​excessive production of red blood cells 
E)  ​skin becomes elastic 
A)  ​lanky, loose jointed skeleton 
B)  ​reduced eye sight 
C)  ​calcium deposits in the liver 
D)  ​excessive production of red blood cells 
E)  ​skin becomes elastic

Question 16

The ABO blood types are an example of ____.

Accepted Answer

A)  ​pleiotropy and polygenic inheritance 
B)  ​multiple alleles and continuous variation 
C)  ​incomplete dominance 
D)  ​codominance and epistasis 
E)  ​multiple alleles and codominance 
A)  ​pleiotropy and polygenic inheritance 
B)  ​multiple alleles and continuous variation 
C)  ​incomplete dominance 
D)  ​codominance and epistasis 
E)  ​multiple alleles and codominance

Question 17

In radishes, long or round are homozygous forms of an incompletely dominant gene, and oval is the phenotype of the heterozygote. If a long radish is crossed with a round radish, give the genotypic and phenotypic ratios of theF2generation.

Accepted Answer

​1 LL, 2 L

Question 18

Environmental effects can result in

Accepted Answer

A)  ​altered metabolic pathways. 
B)  ​a gene mutating in different ways in different individuals. 
C)  ​altered genotypes. 
D)  ​a post-developmental environmental effect. 
E)  ​altered phenotypes. 
A)  ​altered metabolic pathways. 
B)  ​a gene mutating in different ways in different individuals. 
C)  ​altered genotypes. 
D)  ​a post-developmental environmental effect. 
E)  ​altered phenotypes.

Question 19

The allele for albinism (c) is recessive to the allele for normal pigmentation (C). A normally pigmented woman whose father is an albino marries an albino man whose parents are normal. They have three children, two normal and one albino. Give the genotypes for each person listed.

Accepted Answer

Normal pigmented woman, Cc; al

Question 20

What term is used for multiple effects from a single gene?

Accepted Answer

A)  ​expressivity 
B)  ​continuous variation 
C)  ​codominance 
D)  ​pleiotropy 
E)  ​multiple alleles 
A)  ​expressivity 
B)  ​continuous variation 
C)  ​codominance 
D)  ​pleiotropy 
E)  ​multiple alleles

Exam 13: Observing Patterns in Inherited Traits

Four of the following will stimulate the production of males in water fleas. Which one is the exception?

Diet, stress, and exercise can all impact

Which statement most completely describes why the pea plant was an excellent choice for Mendel's experiments?

An individual that has two dominant alleles for a trait (AA) is __________.

Matching Answer the following questions using the group of answers below. -In a dihybrid cross between a parent that is a double heterozygote (Aa Bb) and a parent that is a double homozygous recessive (aa bb), how many unique phenotypes potentially will be present in their offspring?

Pleiotropic genes ____.

Which of the following is TRUE of cystic fibrosis?

Explain how incomplete dominance can result in an apparent "blend."

In which of the following does the environment play a causal role?

A species is found to exist in one of three colors. Assuming an epistatic interaction, how many genes would be involved?

The offspring of a cross between two individuals that breed true for different forms of a trait are __________.

Which eye color has dense melanin deposits in the iris?

A gene locus is

Which of the following is associated with Marfan syndrome?

The ABO blood types are an example of ____.

In radishes, long or round are homozygous forms of an incompletely dominant gene, and oval is the phenotype of the heterozygote. If a long radish is crossed with a round radish, give the genotypic and phenotypic ratios of theF2generation.

Environmental effects can result in

The allele for albinism (c) is recessive to the allele for normal pigmentation (C). A normally pigmented woman whose father is an albino marries an albino man whose parents are normal. They have three children, two normal and one albino. Give the genotypes for each person listed.

What term is used for multiple effects from a single gene?

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

Ground Rules of Metabolism

Where It Starts - Photosynthesis

How Cells Release Chemical Energy

Dna Structure and Function

From Dna to Protein

Gene Control

How Cells Reproduce

Meiosis and Sexual Reproduction

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizating Information About Species

Lifes Origin and Early Evolution

Viruses - Bacteria - and Archaea

Protists - the Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution - the Invertibrates

Animal Evolution - the Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

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