In amniocentesis,the cells from the amniotic | vedclass

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(A) Amniocentesis is a prenatal diagnostic technique used to determine the sex of the fetus and detect chromosomal abnormalities. In this procedure,ce

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Barr body

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(A) Amniocentesis is a prenatal diagnostic technique used to determine the sex of the fetus and detect chromosomal abnormalities. In this procedure,cells are collected from the amniotic fluid surrounding the fetus. To determine the sex of the fetus,these cells are examined for the presence of the $Barr$ body (a condensed,inactive $X$ chromosome). Females (who have two $X$ chromosomes) typically show the presence of a $Barr$ body in their somatic cells,whereas males (who have one $X$ and one $Y$ chromosome) do not. Therefore,the observation of $Barr$ bodies is a key indicator for sex determination.

In amniocentesis,the cells from the amniotic fluid are observed for the presence of which of the following to determine the sex of the fetus?

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