Question 1

Figure 29.2
Use Figure 29.2 to answer the following:
-Is the trait dominant or recessive?

Accepted Answer

The answer of  
Figure 29.2
Use Figure 29.2 to answer...

Question 2

When two genes are on the same chromosome,they are considered linked.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following statements is true concerning genetic screening?

Accepted Answer

A)  Genetic screening is rarely done because it yields very little accurate information. 
B)  Screening can be done only in the first trimester of pregnancy. 
C)  Screening is illegal in over half of the world. 
D)  Screening can be done before conception by carrier recognition or during fetal testing. 
A)  Genetic screening is rarely done because it yields very little accurate information. 
B)  Screening can be done only in the first trimester of pregnancy. 
C)  Screening is illegal in over half of the world. 
D)  Screening can be done before conception by carrier recognition or during fetal testing.

Question 4

The expression of all physical traits is strictly due to the inheritance of specific genes.

Accepted Answer

A) True 
 B)False

Question 5

Match the following:
-The gene allele that suppresses or masks the expression of the other allele.

Accepted Answer

A) Allele 
B) Dominant 
C) Heterozygous 
D) Autosomes 
A) Allele 
B) Dominant 
C) Heterozygous 
D) Autosomes

Question 6

Match the following:
-Results in chromosomes that have mixed contributions from each parent.

Accepted Answer

A) Independent assortment 
B) Chromosome segregation 
C) Chromosome crossover 
D) Gene recombination 
A) Independent assortment 
B) Chromosome segregation 
C) Chromosome crossover 
D) Gene recombination

Question 7

Sex chromosomes of a normal male are ________.

Accepted Answer

A)  XX 
B)  XY 
C)  YY 
D)  any of these, depending on the father 
A)  XX 
B)  XY 
C)  YY 
D)  any of these, depending on the father

Question 8

Down syndrome is an example of nondisjunction of chromosomes.

Accepted Answer

A) True 
 B)False

Question 9

Match the following:
-A chromosome pair that may be very different in size.

Accepted Answer

A) Homozygous 
B) Sex chromosomes 
C) Recessive 
D) Genotype 
A) Homozygous 
B) Sex chromosomes 
C) Recessive 
D) Genotype

Question 10

Match the following:
-A disorder of brain lipid metabolism.

Accepted Answer

A) Cystic fibrosis 
B) Achondroplasia 
C) Albinism 
D) Tay-Sachs disease 
E) Huntington's disease 
A) Cystic fibrosis 
B) Achondroplasia 
C) Albinism 
D) Tay-Sachs disease 
E) Huntington's disease

Question 11

Assume that the allele controlling brown eyes (B)is dominant over that controlling blue eyes (B)in human beings.(In actuality,eye color in humans is an example of polygene inheritance,which is much more complex than this.)A blue-eyed man marries a brown-eyed woman,and they have six children,all brown-eyed.What is the most likely genotype of the father? What is the most likely genotype of the mother? If a seventh child had blue eyes,what can you conclude about the parents' genotypes?

Accepted Answer

The most likely genotype of the father i

Question 12

Environmentally produced phenotypes that mimic conditions that may be caused by genetic mutation are called phenocopies.

Accepted Answer

A) True 
 B)False

Question 13

The ABO blood type is a good example of a(n)________ inheritance.

Accepted Answer

The answer of The ABO blood type is a good...

Question 14

Color blindness is a(n)________ trait.

Accepted Answer

The answer of Color blindness is a(n)________ trait....

Question 15

Match the following:
-Inheritance that results in continuous or qualitative phenotypic variations between two extremes; an example is skin color.

Accepted Answer

A) Sex-linked inheritance 
B) Polygenic inheritance 
C) Dominant-recessive inheritance 
D) Multiple-allele inheritance 
E) Incomplete dominance 
A) Sex-linked inheritance 
B) Polygenic inheritance 
C) Dominant-recessive inheritance 
D) Multiple-allele inheritance 
E) Incomplete dominance

Question 16

Match the following:
-Chromosomes regulating most body characteristics.

Accepted Answer

A) Allele 
B) Dominant 
C) Heterozygous 
D) Autosomes 
A) Allele 
B) Dominant 
C) Heterozygous 
D) Autosomes

Question 17

What would be the gametes of the first-generation individuals?

Accepted Answer

The gametes of the f

Question 18

In humans,farsightedness is inherited by possession of a dominant gene.If a man who is homozygous for normal vision (aa)marries a woman who is heterozygous for farsightedness,what proportion of their children would be expected to be farsighted?

Accepted Answer

One-half of their ch

Question 19

For which of the following are newborn infants not routinely screened at birth?

Accepted Answer

A)  PKU 
B)  color blindness 
C)  imperforate anus 
D)  congenital hip dysplasia 
A)  PKU 
B)  color blindness 
C)  imperforate anus 
D)  congenital hip dysplasia

Question 20

Dominant alleles are so called because under most circumstances they ________.

Accepted Answer

A)  code for genes that are never considered lethal 
B)  suppress the expression of other alleles 
C)  code for desired traits only 
D)  code for most phenotypic and genotypic expressions of a trait 
A)  code for genes that are never considered lethal 
B)  suppress the expression of other alleles 
C)  code for desired traits only 
D)  code for most phenotypic and genotypic expressions of a trait

Exam 29: Heredity

Figure 29.2 Use Figure 29.2 to answer the following: -Is the trait dominant or recessive?

When two genes are on the same chromosome,they are considered linked.

Which of the following statements is true concerning genetic screening?

The expression of all physical traits is strictly due to the inheritance of specific genes.

Match the following: -The gene allele that suppresses or masks the expression of the other allele.

Match the following: -Results in chromosomes that have mixed contributions from each parent.

Sex chromosomes of a normal male are ________.

Down syndrome is an example of nondisjunction of chromosomes.

Match the following: -A chromosome pair that may be very different in size.

Match the following: -A disorder of brain lipid metabolism.

Environmentally produced phenotypes that mimic conditions that may be caused by genetic mutation are called phenocopies.

The ABO blood type is a good example of a(n)________ inheritance.

Color blindness is a(n)________ trait.

Match the following: -Inheritance that results in continuous or qualitative phenotypic variations between two extremes; an example is skin color.

Match the following: -Chromosomes regulating most body characteristics.

What would be the gametes of the first-generation individuals?

In humans,farsightedness is inherited by possession of a dominant gene.If a man who is homozygous for normal vision (aa)marries a woman who is heterozygous for farsightedness,what proportion of their children would be expected to be farsighted?

For which of the following are newborn infants not routinely screened at birth?

Dominant alleles are so called because under most circumstances they ________.

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissue

The Skeleton

Joints

Muscles and Muscle Tissue

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Immune System: Innate and Adaptive Body Defenses

The Respiratory System

The Digestive System

Nutrition,metabolism,and Body Temperature Regulation

The Urinary System

Fluid,electrolyte,and Acid-Base Balance

The Reproductive System

Pregnancy and Human Development

Filters