Answer:
The correct option is C) Homologous chromosomes failed to separate, resulting in non-disjunction.
Step-by-step explanation:
Non- disjunction can be described as a phenomenon in which the chromosomes fail to separate during cell division, resulting in both the chromosomes being transferred to a single gamete.
Non- disjunction can occur in three types:
- Non- disjunction can occur at the time of meiosis when the sister homologous chromosomes fail to separate.
- It might occur in mitosis when sister chromatids fail to separate.
- It might occur in meiosis II when sister chromatids fail to separate.