Which of the following is responsible for reducing variations in progeny?
Correct answer: D. Gene Linkage
- A. Meiosis
- B. Epistasis
- C. Crossing over
- D. Gene Linkage
Explanation
Linked genes are inherited together, so they reduce the number of new combinations and keep progeny more like their parents. Meiosis and crossing over both shuffle alleles and increase variation, and epistasis changes how genes are expressed rather than reducing recombination.
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About Gene Linkage and Crossing Over
Linked genes lie on the same chromosome and tend to pass together, unlike genes that assort independently on different chromosomes. The topic connects linkage with homologous pairing, crossing over during prophase I of meiosis, recombinant and parental offspring, and recombination frequency as an estimate of gene distance.
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