Deck 2: Heredity and Conception

Question 1

Every cell in the human body carries one and only one gene.

Answer 1

False

Question 2

The bulk of a fertile human egg is contributed by the sperm.

Answer 2

False

Question 3

Some bicycle seats can cause a reduction in sperm production for some males.

Answer 3

True

Question 4

In deoxyribonucleic acid (DNA), adenine is paired with

A) guanine.
B) thymine.
C) simple sugar.
D) guanine, thymine, and simple sugar.

Question 5

Which pair of chromosomes determines a person's sex?

A) The 23rd chromosome determines sex.
B) The first chromosome determines sex.
C) None determines sex.
D) They all determine sex.

Question 6

The mother always contributes a(n)

A) Y sex chromosome.
B) X sex chromosome.
C) XX sex chromosome.
D) XY sex chromosome.

Question 7

Which of the following is caused by a single pair of genes?

A) Cystic fibrosis
B) Down syndrome
C) Sex-linked chromosomal abnormalities
D) Crohn's disease

Question 8

Which of the following is TRUE regarding amniocentesis and chorionic villus sampling (CVS)?

A) The risks of spontaneous abortion are about the same with both chorionic villus sampling (CVS)and amniocentesis.
B) Both are performed 14-16 weeks after conception.
C) Any trained practitioner can carry out the procedures with equal skill.
D) Both involve the examination of villi from the membrane that envelops the amniotic sac and fetus.

Question 9

Which of the following twin pair would physically resemble each other the most?

A) Dizygotic of either sex
B) Monozygotic
C) Dizygotic males
D) Monozygotic, but only if female

Question 10

Studies on monozygotic twins raised in separate homes are useful for

A) treating biological disorders of monozygotic twins.
B) analyzing the academic abilities of twins versus individual children.
C) learning whether twins should be separated or not.
D) identifying the genetics underlying twins' behaviors and attitudes.

Question 11

Which statement about sperm is false?

A) Only one can penetrate an ovum.
B) Many are killed by normal vaginal acidity.
C) They sometimes swim up the wrong tube.
D) They are attracted to ova by a sound wave ova emit.

Question 12

Adopted children are most likely to become insecure when they are in

A) preschool.
B) elementary school.
C) middle school.
D) high school.

Question 13

Match the following:

-Spin a bifida

A) takes the form of a double helix
B) person who carries and transmits characteristics but does not express them
C) correlation between child's genetic endowment and responses elicited from others
D) the genetic material received from parents
E) caused by a recessive gene
F) Polygenically determined
G) female sex hormone
H) neural tube defect
I) twins produced from a single egg
J) cell division that results in non identical cells
K) union of an ovum and a sperm cell
L) involves the membrane that envelops the amniotic sac and fetus
M) associated with the 21st pair of chromosomes
N) how genetic material manifests itself in characteristics
O) twins produced from two eggs
P) XXY sex chromosomal pattern
Q) determined by the father
R) differing alleles for a trait
S) caused by a dominant gene
T) self-propulsion

Question 14

Match the following:

-Phenotype

A) takes the form of a double helix
B) person who carries and transmits characteristics but does not express them
C) correlation between child's genetic endowment and responses elicited from others
D) the genetic material received from parents
E) caused by a recessive gene
F) Polygenically determined
G) female sex hormone
H) neural tube defect
I) twins produced from a single egg
J) cell division that results in non identical cells
K) union of an ovum and a sperm cell
L) involves the membrane that envelops the amniotic sac and fetus
M) associated with the 21st pair of chromosomes
N) how genetic material manifests itself in characteristics
O) twins produced from two eggs
P) XXY sex chromosomal pattern
Q) determined by the father
R) differing alleles for a trait
S) caused by a dominant gene
T) self-propulsion

Question 15

Match the following:

-Genotype

A) takes the form of a double helix
B) person who carries and transmits characteristics but does not express them
C) correlation between child's genetic endowment and responses elicited from others
D) the genetic material received from parents
E) caused by a recessive gene
F) Polygenically determined
G) female sex hormone
H) neural tube defect
I) twins produced from a single egg
J) cell division that results in non identical cells
K) union of an ovum and a sperm cell
L) involves the membrane that envelops the amniotic sac and fetus
M) associated with the 21st pair of chromosomes
N) how genetic material manifests itself in characteristics
O) twins produced from two eggs
P) XXY sex chromosomal pattern
Q) determined by the father
R) differing alleles for a trait
S) caused by a dominant gene
T) self-propulsion

Question 16

Match the following:

-Estrogen

A) takes the form of a double helix
B) person who carries and transmits characteristics but does not express them
C) correlation between child's genetic endowment and responses elicited from others
D) the genetic material received from parents
E) caused by a recessive gene
F) Polygenically determined
G) female sex hormone
H) neural tube defect
I) twins produced from a single egg
J) cell division that results in non identical cells
K) union of an ovum and a sperm cell
L) involves the membrane that envelops the amniotic sac and fetus
M) associated with the 21st pair of chromosomes
N) how genetic material manifests itself in characteristics
O) twins produced from two eggs
P) XXY sex chromosomal pattern
Q) determined by the father
R) differing alleles for a trait
S) caused by a dominant gene
T) self-propulsion