Question 1

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.

Question 2

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 3

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.

Question 4

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 5

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

Question 6

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

Accepted Answer

With incomplete dominance, one allele is...

Question 7

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.

Question 8

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

Question 9

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 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

Question 11

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 12

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

Question 13

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

Question 14

Which eye color has dense melanin deposits in the iris?

Accepted Answer

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

Question 15

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

Question 16

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

Question 17

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.

Question 18

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

Question 19

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.

Question 20

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

Accepted Answer

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

Exam 13: Observing Patterns in Inherited Traits

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?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Which eye color has dense melanin deposits in the iris?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

The ABO blood types are an example of ____.

Correct Answer
verified

Correct Answer
verified

Which of the following is associated with Marfan syndrome?

Correct Answer
verified

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

Correct Answer
verified
With incomplete dominance, one allele is...
View Answer

A gene locus is

Correct Answer
verified

Diet, stress, and exercise can all impact

Correct Answer
verified

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.

Correct Answer
verified
Normal pigmented woman, Cc; al...
View Answer

Pleiotropic genes ____.

Correct Answer
verified

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

Correct Answer
verified

Which of the following is TRUE of cystic fibrosis?

Correct Answer
verified

Environmental effects can result in

Correct Answer
verified

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.

Correct Answer
verified
1 LL, 2 L...
View Answer

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

Correct Answer
verified

Exam 13: Observing Patterns in Inherited Traits

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which eye color has dense melanin deposits in the iris?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The ABO blood types are an example of ____.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is associated with Marfan syndrome?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedWith incomplete dominance, one allele is...View AnswerShow Answer

A gene locus is

Correct AnswerverifiedShow Answer

Diet, stress, and exercise can all impact

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedNormal pigmented woman, Cc; al...View AnswerShow Answer

Pleiotropic genes ____.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is TRUE of cystic fibrosis?

Correct AnswerverifiedShow Answer

Environmental effects can result in

Correct AnswerverifiedShow Answer

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.

Correct Answerverified​1 LL, 2 L...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
verified
With incomplete dominance, one allele is...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Normal pigmented woman, Cc; al...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
1 LL, 2 L...
View Answer

Correct Answer
verified