Question

A nondisjunction in meiosis I would result in generation of:

A- Two normal and two abnormal gametes
B- One normal and three abnormal gametes
C- One abnormal and one normal gametes
D- Four abnormal gametes

Answer 1

Answer: option D - Four abnormal gametes

Step-by-step explanation:

Nondisjunction occurs in the Anaphase phase of Meiosis I. It happens that at least ONE pair of homologous chromosomes FAIL to separate, resulting in two daughter cells having an EXTRA copy of one chromosome (e.g XXY) and two cells that are missing that chromosome (e.g XO).

Thus, Nondisjunction results in Four (4) abnormal gametes