VGO-0049
QUESTION
Assertion (A): In cattle, the weight of male calves is higher than female calves.
Reason (R): Male conceptus prolongs the gestational length.
OPTIONS
(A) Both A and R are individually correct and R is correct explanation of A
(B) Both A and R are individually correct but R is not correct explanation of A
(C) A is true but R is false
(D) R is true but A is false
ANSWER
(A) Both A and R are individually correct and R is correct explanation of A
EXPLANATION
Male calves are generally heavier at birth than female calves, and pregnancies carrying males tend to last slightly longer. Additional time for fetal growth contributes to the higher birth weight, making the stated reason a valid contributing explanation of the assertion. Both statements are therefore true; however, fetal sex also influences growth through mechanisms beyond gestation length alone.
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