Divergent centric fusions can be barriers to reproduction in F1 hybrids because
A) the fused sperm cannot fertilize an egg cell.
B) they change the mating behavior of the hybrids.
C) the hybrid organism cannot make functional gametes.
D) the fused chromosomes do not replicate correctly.
E) they increase the genetic divergence in the population.

Question

Quizplus · Accepted Answer

Divergent centric fusions involve the fusion of chromosomes that have different centromere locations, resulting in a rearrangement of genetic material that can disrupt the normal pairing of homologous chromosomes during meiosis. This can lead to the production of non-viable gametes in hybrids, which in turn can act as a reproductive barrier by preventing the production of fertile offspring. Therefore, option C, which states that the hybrid organism cannot make functional gametes, is the best choice.

Divergent Centric Fusions Can Be Barriers to Reproduction in F1