Science · Genetics
Consider the following statements: Statement I: Mitochondrial DNA (mtDNA) generally evolves independently of nuclear chromosomes and is primarily inherited maternally in most animals. Statement II: In haplodiploid (HD) sex determination systems, males are haploid and therefore lack a second copy of nuclear genes that could mask deleterious mutations. Statement III: The absence of masking of nuclear mutations in haploid males can indirectly accelerate the evolution of mitochondrial genes that interact with nuclear-encoded proteins. Which one of the following is correct in respect of the above statements?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Both Statement II and Statement III are correct, and both explain Statement I✓
- 2Both Statement II and Statement III are correct, but only one of them explains Statement I
- 3Only one of the Statements II and III is correct, and that explains Statement I
- 4Neither Statement II nor Statement III is correct
Correct answer
Both Statement II and Statement III are correct, and both explain Statement I
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