Answer:
The mutation observed in the down syndrome occurred as a result of a abnormal and non disjuncted meiosis.
Step-by-step explanation:
Howbeit, mutation can be described as any heritable change of the base-pair sequence of genetic material.
Down syndrome also described as trisomy 21 is a medical condition caused by a chromosomal excess, whereby the patients bear a certain resemblance to the Mongoloid race, such as a small head and tilted eyelids, and typically have a delay in cognitive ability and physical growth.
Meiosis is one that describes the cell division process of a diploid cell into four haploid cells, which develop to produce gametes.
The chromosomal mutation of nondisjunction in down syndrome describes how a pair of chromosomes is not fully separated during meiosis, resulting in the gamete having an extra chromosame (or none at all).
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