Accidents that can occur during meiosis and result in trisomies and monosomies are called
A) nondisjunctions.
B) inversions.
C) reciprocal translocations.
D) recombinations.
E) induced mutations.

Question

Quizplus · Accepted Answer

Nondisjunctions are the accidents that can occur during meiosis where the homologous chromosomes fail to separate correctly during anaphase I or the sister chromatids fail to separate correctly during anaphase II. This can result in a gamete having an extra chromosome (trisomy) or missing a chromosome (monosomy), leading to genetic disorders such as Down syndrome or Turner syndrome. Inversions, reciprocal translocations, and recombinations are types of chromosomal rearrangements that can also lead to genetic disorders, but they do not necessarily involve errors in meiosis. Induced mutations are mutations that are artificially induced by external factors and may not necessarily occur during meiosis.

Accidents That Can Occur During Meiosis and Result in Trisomies