which example would likely result in new combinations of dna in an individual's offspring

Question

A: UV radiation causing a mutation in a skin cell resulting in melanoma
B: homologous chromosomes failing to seperate during meiosis
C: sister chromatids crossing over during mitosis in a heart cell
D: a spontaneous mutation to the dna in a lung cell during mitosis

Answer 1

The example that would likely result in new combinations of DNA in an individual's offspring is:

B: homologous chromosomes failing to separate during meiosis.

This event, known as nondisjunction, can lead to gametes with an abnormal number of chromosomes, resulting in offspring with unique combinations of DNA when these gametes fuse during fertilization. The other options describe mutations or processes that do not directly contribute to the genetic variation in offspring.