Question

If a homologous pair of chromosomes fail to separate during meiosis I, what will be the result?

A) 2 gametes will have 2 of these chromosome and 2 will have 0 of these chromosomes.
B) None of the gametes will have the affected chromosomes.
C) 2 gametes will be normal, 1 gamete will have 2 of the affected chromosomes and 1 gamete will have 0 of the affected chromosomes.
D) 2 gametes will be normal and gametes will have 2 of the affected chromosomes.

Answer 1

Answer: A) 2 gametes will have 2 of these chromosome and 2 will have 0 of these chromosomes.

Explanation: Meiosis is a division process in sex cells. Meiosis has two stages: In Meiosis I duplicated homologous chromosomes (one pair from mother and one pair from father) are separated in two daughter cells. Later those cells begin meiosis II where chromatids of each chromosome are separated in two daughter cells. If homologous chromosomes fail to separate during meiosis I, the result would be 2 diploid (contain two copies of that chromosome) gametes for that chromosome and 2 gametes without that chromosome.