A: If fertilization occurs,the corpus luteum | vedclass

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(A) $hCG$ (human chorionic gonadotropin) is produced by the developing placenta after implantation.It acts on the corpus luteum to prevent its regress

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Assertion and Reason both are correct and Reason is the correct explanation of Assertion.

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(A) $hCG$ (human chorionic gonadotropin) is produced by the developing placenta after implantation.It acts on the corpus luteum to prevent its regression,thereby maintaining it as the corpus luteum of pregnancy.The corpus luteum continues to secrete progesterone,which is essential for maintaining the endometrium during the first trimester of pregnancy.After the first trimester,the placenta takes over the role of producing sufficient progesterone to maintain the pregnancy.

$A$: If fertilization occurs,the corpus luteum is rescued from regression by human chorionic gonadotropin $(hCG)$,which is produced by the placenta.
$R$: In the first trimester,the corpus luteum,stimulated by $hCG$,is responsible for the production of progesterone.

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$A$: If fertilization occurs,the corpus luteum is rescued from regression by human chorionic gonadotropin $(hCG)$,which is produced by the placenta.$R$: In the first trimester,the corpus luteum,stimulated by $hCG$,is responsible for the production of progesterone.