A) non - disjunction
B) mutation
C) deletion
D) duplication
Correct Answer: C
Solution :
Human babies missing (deletion) a portion of the short arm of chromosome 5 (autosome) have a distinctive cat-like cry hence, the french name Cri du-chat syndrome. They are also mentally retarded have malformation in the larynx, moon faces saddle noses, small mandibles, malformed lowset ears and microcephaly.
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