The recombination frequency between two genes of a chromosome is directly proportional to the:
Correct answer: D. Distance between the linked gene loci
- A. Length of the chromosome
- B. Physical linkage between them
- C. Protein content of the chromosome
- D. Distance between the linked gene loci
Explanation
The correct answer is the 'distance between the linked gene loci.' Recombination frequency is a measure of how often crossing over occurs between two genes during meiosis. The farther apart two genes are on a chromosome, the more likely it is that a crossover will occur between them, leading to a higher recombination frequency. The other options are incorrect because they do not directly impact the likelihood of recombination events.
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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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