Question 1

Which of the following information is available in a Punnett square showing the inheritance pattern for an autosomal recessive disorder?

Accepted Answer

A) percentage of males likely to be affected by the disorder 
B) percentage of females likely to be affected by the disorder 
C) percentage of all children likely to be affected by the disorder 
D) number of children born to the two parents 
A) percentage of males likely to be affected by the disorder 
B) percentage of females likely to be affected by the disorder 
C) percentage of all children likely to be affected by the disorder 
D) number of children born to the two parents

Question 2

In a karyotype of a male,which of the following would indicate an abnormality?

Accepted Answer

A) one X chromosome and one Y chromosome 
B) three copies of chromosome 22 
C) 22 pairs of autosomes 
D) a total of 46 chromosomes 
A) one X chromosome and one Y chromosome 
B) three copies of chromosome 22 
C) 22 pairs of autosomes 
D) a total of 46 chromosomes

Question 3

In humans,the "master sex switch" that determines whether an embryo will become a male is the

Accepted Answer

A) X chromosome. 
B) locus. 
C) SRY gene. 
D) androgen switch. 
A) X chromosome. 
B) locus. 
C) SRY gene. 
D) androgen switch.

Question 4

A karyotype shows a chromosomal abnormality that does not change the length of any of the chromosomes.Which abnormality is indicated?

Accepted Answer

A) inversion 
B) deletion 
C) translocation 
D) duplication 
A) inversion 
B) deletion 
C) translocation 
D) duplication

Question 5

Which of the following genetic changes would NOT be passed from parent to child?

Accepted Answer

A) a mutation in a skin cell 
B) the loss of a chromosome in a sperm cell 
C) the addition of a chromosome in an egg cell 
D) a translocation in a gamete 
A) a mutation in a skin cell 
B) the loss of a chromosome in a sperm cell 
C) the addition of a chromosome in an egg cell 
D) a translocation in a gamete

Question 6

Humans have ________ pairs of homologous chromosomes.

Accepted Answer

A) 46 
B) 23 
C) 22 
D) 44 
A) 46 
B) 23 
C) 22 
D) 44

Question 7

Which of the following would explain two chromosomes in an individual cell that contain some,but not all,of the same genes at the same loci?

Accepted Answer

A) Both of the chromosomes are paternal. 
B) Both of the chromosomes are maternal. 
C) The chromosomes are from a common ancestor. 
D) A chromosomal alteration has occurred. 
A) Both of the chromosomes are paternal. 
B) Both of the chromosomes are maternal. 
C) The chromosomes are from a common ancestor. 
D) A chromosomal alteration has occurred.

Question 8

Which of the following statements about homologous chromosomes is true?

Accepted Answer

A) There are 46 pairs in humans. 
B) They contain the same genes in the same locations. 
C) They contain identical alleles in the same location. 
D) They are also known as sex chromosomes. 
A) There are 46 pairs in humans. 
B) They contain the same genes in the same locations. 
C) They contain identical alleles in the same location. 
D) They are also known as sex chromosomes.

Which of the following information is available in a Punnett square showing the inheritance pattern for an autosomal recessive disorder?

In a karyotype of a male,which of the following would indicate an abnormality?

In humans,the "master sex switch" that determines whether an embryo will become a male is the

A karyotype shows a chromosomal abnormality that does not change the length of any of the chromosomes.Which abnormality is indicated?

Which of the following genetic changes would NOT be passed from parent to child?

Humans have ________ pairs of homologous chromosomes.

Which of the following would explain two chromosomes in an individual cell that contain some,but not all,of the same genes at the same loci?

Which of the following statements about homologous chromosomes is true?

The Nature of Science

Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Patterns of Inheritance

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

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Exam 7: Chromosomes and Human Genetics

Which of the following information is available in a Punnett square showing the inheritance pattern for an autosomal recessive disorder?

In a karyotype of a male,which of the following would indicate an abnormality?

In humans,the "master sex switch" that determines whether an embryo will become a male is the

A karyotype shows a chromosomal abnormality that does not change the length of any of the chromosomes.Which abnormality is indicated?

Which of the following genetic changes would NOT be passed from parent to child?

Humans have ________ pairs of homologous chromosomes.

Which of the following would explain two chromosomes in an individual cell that contain some,but not all,of the same genes at the same loci?

Which of the following statements about homologous chromosomes is true?

The Nature of Science

Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Patterns of Inheritance

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