Question

Which of the following would MOST likely result in an abnormal chromosome number?I chose the answer “Failure of homologous chromosomes to separate during meiosis” though, I’m not sure this is correct.The options are:A. Failure of homologous chromosomes to separate during meiosis.B. Mutations occurring during the blastula stage.C. DNA exposed to radiation after the birth of the organism.D. The duration of DNA during translation.

Answer 1

The MOST likely to result in an abnormal chromosome number is option A, Failure of homologous chromosomes to separate during meiosis, what is known as nondisjunction.