In Turner syndrome,a female has:

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(A) Turner syndrome is a genetic disorder caused by the absence of one of the $X$ chromosomes in females.This condition results in a $45$ chromosome c

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$45$ chromosomes with $XO$ genotype.

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(A) Turner syndrome is a genetic disorder caused by the absence of one of the $X$ chromosomes in females.This condition results in a $45$ chromosome count,represented as $45, XO$.Individuals with Turner syndrome are phenotypically female but are sterile due to underdeveloped ovaries and lack of secondary sexual characteristics.Therefore,the correct description is that they have $45$ chromosomes with an $XO$ genotype.

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