The given diagram shows crossing over during meiosis.The diagram that identifies the outcome of this crossing over is:
Correct answer: B. Option B
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
Crossing over during meiosis involves the exchange of genetic material between homologous chromosomes, leading to new combinations of alleles. Option B shows the exchange of genetic material between the two chromatids of homologous chromosome that were crossing over. So option B is correct. In other options, either DNA is unchanged or shows wrong exchange.
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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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