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Cri-du-chat syndrome in humans is caused by the
trisomy of $21^{st}$ chromosome
fertilization of an $XX$ egg by a normal $Y$-bearing sperm
loss of half of the short arm of chromosome $5$
loss of half of the long arm of chromosome $5$
Solution
(c) : Criduchat syndrome, also called deletion $5p$ syndrome, (or $5p$ minus), is a rare genetic disorder. Criduchat syndrome is due to a partial deletion of the short arm of chromosome number $5$; The name of this syndrome is French for “cry of the cat,” referring to the distinctive cry of children with this disorder. The cry is caused by abnormal larynx development, which becomes normal within a few weeks of birth. Infants with criduchat have low birth weight and may have respiratory problems. Some people with this disorder have a shortened lifespan, but most have a normal life expectancy.