Answer:
The correct option is a) non disjunction
Explanation:
Non disjunction can be described as one of the most common times of errors of the chromosome. Due to non-disjunction, the chromosomes are not able to separate properly at the time of the division of the cell. As a result, sex cells containing the wrong number of chromosomes are made. This leads to various disorders in the offsprings being formed. Hence, the correct option is a) non disjuction.
