BIOL 252 Module 9 | Human Anatomy & Physiology II
w/Lab Exam Q&A | Portage Learning
These are original practice questions written for study. They are not official BIOL 252,
Portage Learning, or university exam questions and are not copied from any
copyrighted question bank. They cover common BIOL 252 Module 9 | Human Anatomy
& Physiology II topics, including genetics, heredity, human development, and related
clinical applications with NCLEX-style framing.
Question 1:
Which term describes the study of inheritance?
A. Genetics
B. Genomics
C. Proteomics
D. Cytology
Correct answer: A
Rationale: Genetics is the study of heredity and the variation of inherited traits.
Question 2:
A gene is best defined as:
A. A segment of DNA that codes for a protein
B. A type of chromosome
C. A protein molecule
D. A lipid bilayer
Correct answer: A
Rationale: A gene is a DNA segment that contains instructions for making a protein or
functional RNA.
Question 3:
How many chromosomes does a normal human somatic cell contain?
A. 23
B. 46
C. 92
D. 22
,Correct answer: B
Rationale: Human somatic cells contain 46 chromosomes (23 pairs).
Question 4:
How many chromosomes does a normal human gamete contain?
A. 23
B. 46
C. 92
D. 22
Correct answer: A
Rationale: Gametes (sperm and egg) are haploid and contain 23 chromosomes.
Question 5:
Which pair of chromosomes determines sex in humans?
A. Chromosome 21
B. Chromosome 1
C. X and Y chromosomes
D. Chromosome 18
Correct answer: C
Rationale: The X and Y chromosomes determine genetic sex.
Question 6:
A female has which sex chromosome combination?
A. XY
B. XX
C. XO
D. YY
Correct answer: B
Rationale: Females have two X chromosomes (XX).
Question 7:
A male has which sex chromosome combination?
A. XY
B. XX
, C. XO
D. YY
Correct answer: A
Rationale: Males have one X and one Y chromosome (XY).
Question 8:
Which gene on the Y chromosome initiates testis development?
A. SRY
B. XIST
C. CFTR
D. HBB
Correct answer: A
Rationale: The SRY gene triggers differentiation of the gonad into a testis.
Question 9:
An allele is best defined as:
A. An alternative form of a gene
B. A type of chromosome
C. A protein molecule
D. A cell organelle
Correct answer: A
Rationale: Alleles are different versions of the same gene.
Question 10:
An organism with two identical alleles for a trait is:
A. Homozygous
B. Heterozygous
C. Hemizygous
D. Codominant
Correct answer: A
Rationale: Homozygous means two identical alleles.
Question 11:
An organism with two different alleles for a trait is:
w/Lab Exam Q&A | Portage Learning
These are original practice questions written for study. They are not official BIOL 252,
Portage Learning, or university exam questions and are not copied from any
copyrighted question bank. They cover common BIOL 252 Module 9 | Human Anatomy
& Physiology II topics, including genetics, heredity, human development, and related
clinical applications with NCLEX-style framing.
Question 1:
Which term describes the study of inheritance?
A. Genetics
B. Genomics
C. Proteomics
D. Cytology
Correct answer: A
Rationale: Genetics is the study of heredity and the variation of inherited traits.
Question 2:
A gene is best defined as:
A. A segment of DNA that codes for a protein
B. A type of chromosome
C. A protein molecule
D. A lipid bilayer
Correct answer: A
Rationale: A gene is a DNA segment that contains instructions for making a protein or
functional RNA.
Question 3:
How many chromosomes does a normal human somatic cell contain?
A. 23
B. 46
C. 92
D. 22
,Correct answer: B
Rationale: Human somatic cells contain 46 chromosomes (23 pairs).
Question 4:
How many chromosomes does a normal human gamete contain?
A. 23
B. 46
C. 92
D. 22
Correct answer: A
Rationale: Gametes (sperm and egg) are haploid and contain 23 chromosomes.
Question 5:
Which pair of chromosomes determines sex in humans?
A. Chromosome 21
B. Chromosome 1
C. X and Y chromosomes
D. Chromosome 18
Correct answer: C
Rationale: The X and Y chromosomes determine genetic sex.
Question 6:
A female has which sex chromosome combination?
A. XY
B. XX
C. XO
D. YY
Correct answer: B
Rationale: Females have two X chromosomes (XX).
Question 7:
A male has which sex chromosome combination?
A. XY
B. XX
, C. XO
D. YY
Correct answer: A
Rationale: Males have one X and one Y chromosome (XY).
Question 8:
Which gene on the Y chromosome initiates testis development?
A. SRY
B. XIST
C. CFTR
D. HBB
Correct answer: A
Rationale: The SRY gene triggers differentiation of the gonad into a testis.
Question 9:
An allele is best defined as:
A. An alternative form of a gene
B. A type of chromosome
C. A protein molecule
D. A cell organelle
Correct answer: A
Rationale: Alleles are different versions of the same gene.
Question 10:
An organism with two identical alleles for a trait is:
A. Homozygous
B. Heterozygous
C. Hemizygous
D. Codominant
Correct answer: A
Rationale: Homozygous means two identical alleles.
Question 11:
An organism with two different alleles for a trait is:
