Question 1

After birth, the infant's pulmonary circulation is increased because the foramen ovale ____ and the ductus arteriosus ____.

Accepted Answer

A) is closed/constricts 
B) is opened/constricts 
C) is closed/dilates 
D) is opened/dilates 
A) is closed/constricts 
B) is opened/constricts 
C) is closed/dilates 
D) is opened/dilates

Question 2

When a zygote undergoes cleavage, the process of cell division is ____________________.

Accepted Answer

The answer of When a zygote undergoes cleavage, the process...

Question 3

After birth, the infant's ductus venosus constricts because:

Accepted Answer

A) more blood is returning from the lungs 
B) the umbilical arteries have been cut 
C) more blood is flowing to the lungs 
D) the umbilical vein has been cut 
A) more blood is returning from the lungs 
B) the umbilical arteries have been cut 
C) more blood is flowing to the lungs 
D) the umbilical vein has been cut

Question 4

Which of the following statements are true of genetics? (Read carefully and select all of the correct statements.)

Accepted Answer

A) Genotype is the assortment of alleles (genes) that are actually present in a person. 
B) The same phenotype may be possible with two different genotypes. 
C) The same genotype may be possible with two different phenotypes. 
D) In a homozygous pair of alleles, both are the same. 
E) In a heterozygous pair of alleles, both are either maternal or paternal.
F)The homozygous phenotype for a trait is always different from the heterozygous phenotype. 
A) Genotype is the assortment of alleles (genes) that are actually present in a person. 
B) The same phenotype may be possible with two different genotypes. 
C) The same genotype may be possible with two different phenotypes. 
D) In a homozygous pair of alleles, both are the same. 
E) In a heterozygous pair of alleles, both are either maternal or paternal.
F)The homozygous phenotype for a trait is always different from the heterozygous phenotype.

Question 5

For people, curly hair is dominant and straight hair is recessive. Genetics problem: Dad has straight hair and Mom is heterozygous for curly hair. The chance that their child will have curly hair is:

Accepted Answer

A) 0% 
B) 25% 
C) 50% 
D) 100% 
A) 0% 
B) 25% 
C) 50% 
D) 100%

Question 6

The trophoblast of the blastocyst secretes enzymes to permit ____________________ in the uterus.

Accepted Answer

The answer of The trophoblast of the blastocyst secretes enzymes...

Question 7

A person has two genes for each genetic trait; these genes are called:

Accepted Answer

A) positive and negative 
B) maternal and paternal 
C) present and absent 
D) dominant and recessive 
A) positive and negative 
B) maternal and paternal 
C) present and absent 
D) dominant and recessive

Question 8

The stage of labor during which the placenta is delivered is the:

Accepted Answer

A) first stage 
B) second stage 
C) third stage 
D) fourth stage 
A) first stage 
B) second stage 
C) third stage 
D) fourth stage

Question 9

Which of the following statements are true of sex-linked inheritance? (Read carefully and select all of the correct statements.)

Accepted Answer

A) The Y chromosome has more genes than does the X chromosome, and they are all dominant. 
B) A woman with one gene for a sex-linked trait is a carrier of the trait. 
C) The dominant gene on the Y chromosome is expressed when the corresponding gene on the X chromosome is missing. 
D) The dominant gene on the Y chromosome is expressed when the corresponding gene on the X chromosome is recessive. 
E) Men can be carriers only if the gene for the trait on the Y chromosome is recessive
F)A daughter acquires a sex-linked trait from both parents, but a son acquires such a trait only from his mother. 
A) The Y chromosome has more genes than does the X chromosome, and they are all dominant. 
B) A woman with one gene for a sex-linked trait is a carrier of the trait. 
C) The dominant gene on the Y chromosome is expressed when the corresponding gene on the X chromosome is missing. 
D) The dominant gene on the Y chromosome is expressed when the corresponding gene on the X chromosome is recessive. 
E) Men can be carriers only if the gene for the trait on the Y chromosome is recessive
F)A daughter acquires a sex-linked trait from both parents, but a son acquires such a trait only from his mother.

Question 10

A person has two genes for each genetic trait, and these genes are called ____________________ and ____________________.

Accepted Answer

maternal, paternal
p

Question 11

The amnion is the embryonic membrane that contains ____________________ to provide a(n) ____________________ for the fetus.

Accepted Answer

fluid, cus

Question 12

The stem cells of a blastocyst are found in:

Accepted Answer

A) the inner cell mass 
B) the outer cell mass 
C) the trophoblast 
D) all of these 
A) the inner cell mass 
B) the outer cell mass 
C) the trophoblast 
D) all of these

Question 13

The union of human ____________________ and ____________________, each with ____________________ chromosomes, forms a zygote.

Accepted Answer

egg, sperm, 23
sperm

Question 14

The genetic code in cells is the ____ of the ____.

Accepted Answer

A) DNA/ribosomes 
B) RNA/chromosomes 
C) RNA/nucleus 
D) DNA/chromosomes 
A) DNA/ribosomes 
B) RNA/chromosomes 
C) RNA/nucleus 
D) DNA/chromosomes

Question 15

During the third stage of labor, ____________________.

Accepted Answer

the placen

Question 16

Genetics problem: Mom is heterozygous for type A blood and Dad is homozygous for type B blood. The chance that their child will have type AB blood is:

Accepted Answer

A) 0% 
B) 25% 
C) 50% 
D) 100% 
A) 0% 
B) 25% 
C) 50% 
D) 100%

Question 17

A person's genetic makeup for a particular trait is called the:

Accepted Answer

A) genotype 
B) chromotype 
C) phenotype 
D) character type 
A) genotype 
B) chromotype 
C) phenotype 
D) character type

Question 18

Genetics problem: Both Mom and Dad are heterozygous for type B blood. The percent chance that a child of theirs will have type B blood is ____________________.

Accepted Answer

The answer of Genetics problem: Both Mom and Dad are...

Question 19

After birth, the baby's ductus arteriosus ____________________, which allows more blood to flow to the ____________________, which increases ____________________ circulation.

Accepted Answer

constricts, lungs, p

Question 20

Which of the following statements are true of multiple allele inheritance? (Read carefully and select all of the correct statements.)

Accepted Answer

A) More than two alleles for the trait exist, but an individual will have only two of them. 
B) At least one of the alleles that exist will be dominant over another. 
C) A child may have a phenotype that is different from that of both parents. 
D) A child may have a genotype that is different from that of both parents. 
E) The human ABO blood group has three alleles and four possible blood types.
F)In the ABO group, the recessive phenotype is the most frequent in the human population. 
A) More than two alleles for the trait exist, but an individual will have only two of them. 
B) At least one of the alleles that exist will be dominant over another. 
C) A child may have a phenotype that is different from that of both parents. 
D) A child may have a genotype that is different from that of both parents. 
E) The human ABO blood group has three alleles and four possible blood types.
F)In the ABO group, the recessive phenotype is the most frequent in the human population.

Exam 21: Human Development and Genetics

After birth, the infant's pulmonary circulation is increased because the foramen ovale ____ and the ductus arteriosus ____.

When a zygote undergoes cleavage, the process of cell division is ____________________.

After birth, the infant's ductus venosus constricts because:

Which of the following statements are true of genetics? (Read carefully and select all of the correct statements.)

For people, curly hair is dominant and straight hair is recessive. Genetics problem: Dad has straight hair and Mom is heterozygous for curly hair. The chance that their child will have curly hair is:

The trophoblast of the blastocyst secretes enzymes to permit ____________________ in the uterus.

A person has two genes for each genetic trait; these genes are called:

The stage of labor during which the placenta is delivered is the:

Which of the following statements are true of sex-linked inheritance? (Read carefully and select all of the correct statements.)

A person has two genes for each genetic trait, and these genes are called ____________________ and ____________________.

The amnion is the embryonic membrane that contains ____________________ to provide a(n) ____________________ for the fetus.

The stem cells of a blastocyst are found in:

The union of human ____________________ and ____________________, each with ____________________ chromosomes, forms a zygote.

The genetic code in cells is the ____ of the ____.

During the third stage of labor, ____________________.

Genetics problem: Mom is heterozygous for type A blood and Dad is homozygous for type B blood. The chance that their child will have type AB blood is:

A person's genetic makeup for a particular trait is called the:

Genetics problem: Both Mom and Dad are heterozygous for type B blood. The percent chance that a child of theirs will have type B blood is ____________________.

After birth, the baby's ductus arteriosus ____________________, which allows more blood to flow to the ____________________, which increases ____________________ circulation.

Which of the following statements are true of multiple allele inheritance? (Read carefully and select all of the correct statements.)

Organization and General Plan of the Body

Some Basic Chemistry

Cells

Tissues and Membranes

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The Senses

The Endocrine System

Blood

The Heart

The Vascular System

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Body Temperature and Metabolism

The Urinary System

Fluidelectrolyte and Acidbase Balance

The Reproductive Systems

An Introduction to Microbiology and Human Disease

Filters

After birth, the infant's pulmonary circulation is increased because the foramen ovale and the ductus arteriosus .

A person has two genes for each genetic trait, and these genes are called and .

The amnion is the embryonic membrane that contains to provide a(n) for the fetus.

The union of human and , each with chromosomes, forms a zygote.

The genetic code in cells is the of the .

After birth, the baby's ductus arteriosus , which allows more blood to flow to the , which increases circulation.