Q1. [1] medium exam-ready
Sexual reproduction generates more heritable variation than asexual reproduction primarily because:
((A)) Sexual reproduction involves two individuals whose genetic material combines, producing new combinations of traits
((B)) Asexual reproduction always involves mutations while sexual reproduction does not
((C)) Sexual reproduction occurs faster, giving more opportunities for variation
((D)) In sexual reproduction, only the mother's genes are passed to offspring, halving the genetic information
- A Sexual reproduction involves more DNA copying errors
- B Sexual reproduction combines genetic material from two different individuals, generating new gene combinations
- C Asexual reproduction does not produce any variation at all
- D Sexual reproduction skips the process of DNA replication
Generated by claude-sonnet-4-6 · 2026-06-26 01:02 · grounding rag
Model Answer
Answer: B
Sexual reproduction combines genetic material from two different individuals, generating new gene combinations, which produces more heritable variation than asexual reproduction.
Source: Chapter 7 – Sexual Reproduction; Chapter 8 – Introduction
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Explanation
- The key concept is that sexual reproduction involves two parents, so their genetic material combines, creating new combinations of traits in offspring.
- The textbook explicitly states: "Modes of sexual reproduction allow for greater variation to be generated."
- Eliminate wrong options: Asexual reproduction does not always involve mutations (B wrong); sexual reproduction is not faster (C wrong); both parents' genes are inherited, not just the mother's (D wrong).
- Option A in the MCQ stem is the closest to correct but uses different wording — the mapped answer from the given options is B.