Question 1

The processes that pass genetic information from generation to generation are

Accepted Answer

A)  mitosis and fertilization. 
B)  meiosis and fertilization. 
C)  mitosis and meiosis. 
D)  interactions of DNA and the environment. 
A)  mitosis and fertilization. 
B)  meiosis and fertilization. 
C)  mitosis and meiosis. 
D)  interactions of DNA and the environment.

Question 2

Genetic information passes from protein to RNA to DNA.

Accepted Answer

A) True 
 B)False

Question 3

Amniocentesis provides an image of a developing fetus.

Accepted Answer

A) True 
 B)False

Question 4

An inverted bell-shaped curve represents the distribution of phenotypes of a multifactorial trait in a population.

Accepted Answer

A) True 
 B)False

Question 5

During amniocentesis

Accepted Answer

A)  a needle removes cells from the fetus. 
B)  a piece of the placenta is snipped off and examined for abnormal cells. 
C)  fetal fibroblasts in amniotic fluid are cultured and a karyotype constructed. 
D)  blood is removed from a woman's arm and fetal cells isolated and their chromosomes karyotyped. 
A)  a needle removes cells from the fetus. 
B)  a piece of the placenta is snipped off and examined for abnormal cells. 
C)  fetal fibroblasts in amniotic fluid are cultured and a karyotype constructed. 
D)  blood is removed from a woman's arm and fetal cells isolated and their chromosomes karyotyped.

Question 6

A human male is hemizygous for genes on the X chromosome because he has two copies of that chromosome.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following prenatal tests is non-invasive?

Accepted Answer

A)  Amniocentesis 
B)  Chorionic villi sampling 
C)  Ultrasound 
D)  Inserting a shunt into a fetus with water on the brain 
A)  Amniocentesis 
B)  Chorionic villi sampling 
C)  Ultrasound 
D)  Inserting a shunt into a fetus with water on the brain

Question 8

The field of genetics deals only with disease.

Accepted Answer

A) True 
 B)False

Question 9

The phenotypes and genotypes that result from a cross of Aa and aa (A = normal pigmentation and a = albinism) are

Accepted Answer

A)  phenotypes-all normal; genotypes-50% heterozygous and 50% homozygous recessive. 
B)  phenotypes-all albino; genotypes-all homozygous recessive. 
C)  phenotypes-50% normal and 50% albino; genotypes-50% heterozygous and 50% homozygous recessive. 
D)  phenotypes-all albino; genotypes-50% heterozygous and 50% homozygous recessive. 
A)  phenotypes-all normal; genotypes-50% heterozygous and 50% homozygous recessive. 
B)  phenotypes-all albino; genotypes-all homozygous recessive. 
C)  phenotypes-50% normal and 50% albino; genotypes-50% heterozygous and 50% homozygous recessive. 
D)  phenotypes-all albino; genotypes-50% heterozygous and 50% homozygous recessive.

Question 10

How alike are our genomes?

Accepted Answer

A)  About 10% 
B)  About 25% 
C)  About 75% 
D)  Nearly 100% 
A)  About 10% 
B)  About 25% 
C)  About 75% 
D)  Nearly 100%

Question 11

Polydactyly is an example of a trait that is both ___________ and variably expressive.

Accepted Answer

A)  incompletely penetrant 
B)  pleiotropic 
C)  multifactorial 
D)  completely penetrant 
A)  incompletely penetrant 
B)  pleiotropic 
C)  multifactorial 
D)  completely penetrant

Question 12

An autosomal dominant condition in a family will disappear if in any generation no one inherits the disease.

Accepted Answer

A) True 
 B)False

Question 13

An example of a sex-influenced trait is

Accepted Answer

A)  baldness. 
B)  hemophilia. 
C)  colorblindness. 
D)  hypertension. 
A)  baldness. 
B)  hemophilia. 
C)  colorblindness. 
D)  hypertension.

Question 14

A multifactorial trait is determined by

Accepted Answer

A)  only environmental factors. 
B)  only by genetic factors. 
C)  neither genetic nor environmental factors. 
D)  one or more genes and the environment. 
A)  only environmental factors. 
B)  only by genetic factors. 
C)  neither genetic nor environmental factors. 
D)  one or more genes and the environment.

Question 15

A recessive allele masks the effect of a dominant allele.

Accepted Answer

A) True 
 B)False

Question 16

Gene expression profiling

Accepted Answer

A)  detects the mRNAs present in a particular cell type under particular conditions. 
B)  detects the mutations that a person has inherited. 
C)  is a chart of chromosomes in specific cell types. 
D)  is a size-order chart of chromosomes. 
A)  detects the mRNAs present in a particular cell type under particular conditions. 
B)  detects the mutations that a person has inherited. 
C)  is a chart of chromosomes in specific cell types. 
D)  is a size-order chart of chromosomes.

Question 17

The expression of an inherited trait is the genotype and the DNA sequence is the phenotype.

Accepted Answer

A) True 
 B)False

Question 18

Different alleles of the same gene are said to be

Accepted Answer

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

Question 19

The two general types of chromosomes are

Accepted Answer

A)  autosomes and allosomes. 
B)  sex chromosomes and allosomes. 
C)  sex chromosomes and autosomes. 
D)  X and Y chromosomes. 
A)  autosomes and allosomes. 
B)  sex chromosomes and allosomes. 
C)  sex chromosomes and autosomes. 
D)  X and Y chromosomes.

Question 20

The genotypes and phenotypes that result from a cross of AA and Aa (A = normal pigmentation and a = albinism) are

Accepted Answer

A)  phenotypes - all normal; genotypes - 50% homozygous dominant and 50% heterozygous. 
B)  phenotypes - 50% normal and 50% albino; genotypes - all heterozygous. 
C)  phenotypes - 75% norma and 25% albino; genotypes - 75% heterozygous and 25% homozygous. 
D)  phenotypes - all albino; genotypes - 50% heterozygous and 50% homozygous recessive. 
A)  phenotypes - all normal; genotypes - 50% homozygous dominant and 50% heterozygous. 
B)  phenotypes - 50% normal and 50% albino; genotypes - all heterozygous. 
C)  phenotypes - 75% norma and 25% albino; genotypes - 75% heterozygous and 25% homozygous. 
D)  phenotypes - all albino; genotypes - 50% heterozygous and 50% homozygous recessive.

Exam 24: Genetics and Genomics

The processes that pass genetic information from generation to generation are

Genetic information passes from protein to RNA to DNA.

Amniocentesis provides an image of a developing fetus.

An inverted bell-shaped curve represents the distribution of phenotypes of a multifactorial trait in a population.

During amniocentesis

A human male is hemizygous for genes on the X chromosome because he has two copies of that chromosome.

Which of the following prenatal tests is non-invasive?

The field of genetics deals only with disease.

The phenotypes and genotypes that result from a cross of Aa and aa (A = normal pigmentation and a = albinism) are

How alike are our genomes?

Polydactyly is an example of a trait that is both ___________ and variably expressive.

An autosomal dominant condition in a family will disappear if in any generation no one inherits the disease.

An example of a sex-influenced trait is

A multifactorial trait is determined by

A recessive allele masks the effect of a dominant allele.

Gene expression profiling

The expression of an inherited trait is the genotype and the DNA sequence is the phenotype.

Different alleles of the same gene are said to be

The two general types of chromosomes are

The genotypes and phenotypes that result from a cross of AA and Aa (A = normal pigmentation and a = albinism) are

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Joints of the Skeletal System

Muscular System

Nervous System I: Basic Structure and Function

Nervous System II: Division of the Nervous System

Nervous System III: Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System

Nutrition and Metabolism

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Based Balance

Reproductive Systems

Pregnancy, Growth, and Development

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