BIOD 210 Exam 2 - Genetics Quiz 2026 UPDATE 2026 Update • Verified Answers
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
BIOD 210 Exam 2 - Genetics Quiz 2026 UPDATE
Actual Exam Questions & Verified Answers
with Detailed Rationales
Document Type: Exam (Elaborations)
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Full Rationales
Status: Verified & Updated for 2026
Exam (Elaborations) • Actual Questions & Rationales Page 1
,BIOD 210 Exam 2 - Genetics Quiz 2026 UPDATE 2026 Update • Verified Answers
Questions & Verified Answers
1. Who is widely considered the father of genetics for his studies on pea plants?
A. Charles Darwin
B. Francis Crick
C. James Watson
D. Gregor Mendel
Answer: D
Rationale: Gregor Mendel established the fundamental laws of inheritance through his systematic breeding of
pea plants. Exam questions often test the ability to distinguish this concept from closely related distractors,
making a clear rationale essential for mastery. Applying this knowledge in clinical settings supports safe,
evidence-based practice and improves patient outcomes.
2. Which law states that the two alleles for a heritable character separate during gamete
formation?
A. Law of Independent Assortment
B. Law of Segregation
C. Law of Dominance
D. Law of Linkage
Answer: B
Rationale: The Law of Segregation states that alleles separate so that each gamete carries only one allele for
each gene. Applying this knowledge in clinical settings supports safe, evidence-based practice and improves
patient outcomes. This is an important clinical concept because selecting the correct answer (B) requires
understanding both the pathophysiology and the practical nursing implications.
3. An organism with two identical alleles for a character is said to be:
A. Heterozygous
B. Hemizygous
C. Homozygous
D. Dihybrid
Answer: C
Rationale: Homozygous organisms have two identical alleles (e.g., AA or aa) for a specific gene. Applying this
knowledge in clinical settings supports safe, evidence-based practice and improves patient outcomes. This is
an important clinical concept because selecting the correct answer (C) requires understanding both the
pathophysiology and the practical nursing implications.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, BIOD 210 Exam 2 - Genetics Quiz 2026 UPDATE 2026 Update • Verified Answers
4. What is the physical appearance or visible trait of an organism called?
A. Genotype
B. Phenotype
C. Haplotype
D. Allele
Answer: B
Rationale: Phenotype refers to the observable physical and physiological traits of an organism, determined by
its genetic makeup. This is an important clinical concept because selecting the correct answer (B) requires
understanding both the pathophysiology and the practical nursing implications. Recognizing this principle
allows the nurse to prioritize care, anticipate complications, and provide accurate patient education.
5. In a cross between two heterozygous individuals (Aa x Aa), what is the expected genotypic
ratio?
A. 3:1
B. 9:3:3:1
C. 1:1
D. 1:2:1
Answer: D
Rationale: The genotypic ratio for a monohybrid cross between two heterozygotes is 1 AA : 2 Aa : 1 aa. This is
an important clinical concept because selecting the correct answer (D) requires understanding both the
pathophysiology and the practical nursing implications. Recognizing this principle allows the nurse to prioritize
care, anticipate complications, and provide accurate patient education.
6. Which enzyme is responsible for unwinding the DNA double helix during replication?
A. Helicase
B. Ligase
C. DNA Polymerase
D. Primase
Answer: A
Rationale: Helicase breaks the hydrogen bonds between base pairs to unzip the DNA strands. Applying this
knowledge in clinical settings supports safe, evidence-based practice and improves patient outcomes. This is
an important clinical concept because selecting the correct answer (A) requires understanding both the
pathophysiology and the practical nursing implications.
Exam (Elaborations) • Actual Questions & Rationales Page 3
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
BIOD 210 Exam 2 - Genetics Quiz 2026 UPDATE
Actual Exam Questions & Verified Answers
with Detailed Rationales
Document Type: Exam (Elaborations)
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Full Rationales
Status: Verified & Updated for 2026
Exam (Elaborations) • Actual Questions & Rationales Page 1
,BIOD 210 Exam 2 - Genetics Quiz 2026 UPDATE 2026 Update • Verified Answers
Questions & Verified Answers
1. Who is widely considered the father of genetics for his studies on pea plants?
A. Charles Darwin
B. Francis Crick
C. James Watson
D. Gregor Mendel
Answer: D
Rationale: Gregor Mendel established the fundamental laws of inheritance through his systematic breeding of
pea plants. Exam questions often test the ability to distinguish this concept from closely related distractors,
making a clear rationale essential for mastery. Applying this knowledge in clinical settings supports safe,
evidence-based practice and improves patient outcomes.
2. Which law states that the two alleles for a heritable character separate during gamete
formation?
A. Law of Independent Assortment
B. Law of Segregation
C. Law of Dominance
D. Law of Linkage
Answer: B
Rationale: The Law of Segregation states that alleles separate so that each gamete carries only one allele for
each gene. Applying this knowledge in clinical settings supports safe, evidence-based practice and improves
patient outcomes. This is an important clinical concept because selecting the correct answer (B) requires
understanding both the pathophysiology and the practical nursing implications.
3. An organism with two identical alleles for a character is said to be:
A. Heterozygous
B. Hemizygous
C. Homozygous
D. Dihybrid
Answer: C
Rationale: Homozygous organisms have two identical alleles (e.g., AA or aa) for a specific gene. Applying this
knowledge in clinical settings supports safe, evidence-based practice and improves patient outcomes. This is
an important clinical concept because selecting the correct answer (C) requires understanding both the
pathophysiology and the practical nursing implications.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, BIOD 210 Exam 2 - Genetics Quiz 2026 UPDATE 2026 Update • Verified Answers
4. What is the physical appearance or visible trait of an organism called?
A. Genotype
B. Phenotype
C. Haplotype
D. Allele
Answer: B
Rationale: Phenotype refers to the observable physical and physiological traits of an organism, determined by
its genetic makeup. This is an important clinical concept because selecting the correct answer (B) requires
understanding both the pathophysiology and the practical nursing implications. Recognizing this principle
allows the nurse to prioritize care, anticipate complications, and provide accurate patient education.
5. In a cross between two heterozygous individuals (Aa x Aa), what is the expected genotypic
ratio?
A. 3:1
B. 9:3:3:1
C. 1:1
D. 1:2:1
Answer: D
Rationale: The genotypic ratio for a monohybrid cross between two heterozygotes is 1 AA : 2 Aa : 1 aa. This is
an important clinical concept because selecting the correct answer (D) requires understanding both the
pathophysiology and the practical nursing implications. Recognizing this principle allows the nurse to prioritize
care, anticipate complications, and provide accurate patient education.
6. Which enzyme is responsible for unwinding the DNA double helix during replication?
A. Helicase
B. Ligase
C. DNA Polymerase
D. Primase
Answer: A
Rationale: Helicase breaks the hydrogen bonds between base pairs to unzip the DNA strands. Applying this
knowledge in clinical settings supports safe, evidence-based practice and improves patient outcomes. This is
an important clinical concept because selecting the correct answer (A) requires understanding both the
pathophysiology and the practical nursing implications.
Exam (Elaborations) • Actual Questions & Rationales Page 3
