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14. The replicated chromosome shown in the previous question contains:

A. DNA from one of your parents in the sister chromatid on the left and DNA from the other parent in the sister chromatid on the right.
B. DNA contributions from both parents, resulting from recombination (crossing over).
C. DNA from only one of your parents.

1 answer

The correct answer is B. DNA contributions from both parents, resulting from recombination (crossing over).

During the process of meiosis, homologous chromosomes can undergo recombination or crossing over, leading to chromatids that contain a mix of genetic material from both parents. This means that each replicated chromosome may have segments from both the maternal and paternal DNA due to this exchange. Hence, the replicated chromosomes consist of a combination of DNA from both parents, not just one or the other.