A: Antlers in male deer are sex-influenced tr | vedclass

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(D) The development of antlers in male deer is a classic example of a sex-limited trait,not a sex-influenced trait.Sex-limited traits are expressed in

Vedclass · Accepted Answer

Both Assertion and Reason are incorrect.

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(D) The development of antlers in male deer is a classic example of a sex-limited trait,not a sex-influenced trait.Sex-limited traits are expressed in only one sex,even though the genes for these traits are present in both sexes.Sex-influenced traits,on the other hand,are expressed in both sexes but with different frequencies or intensities (e.g.,pattern baldness in humans).Since antlers only develop in males and never in females,it is a sex-limited trait.Therefore,the assertion is incorrect because antlers are sex-limited,and the reason is also incorrect as it misidentifies the nature of the trait.

Column $I$	Column $II$
$(a)$ Sickle cell anaemia	$(p)$ Homogentisic acid
$(b)$ Alkaptonuria	$(q)$ Lack of Melanin
$(c)$ Albinism	$(r)$ Accumulation of Amino acid
$(d)$ Phenylketonuria	$(s)$ Defective haemoglobin

$A$: Antlers in male deer are sex-influenced traits.
$R$: These are controlled by autosomal genes which are influenced by the sex of the bearer.

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Column $I$ Column $II$
$(a)$ Sickle cell anaemia $(p)$ Homogentisic acid
$(b)$ Alkaptonuria $(q)$ Lack of Melanin
$(c)$ Albinism $(r)$ Accumulation of Amino acid
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$A$: Antlers in male deer are sex-influenced traits.$R$: These are controlled by autosomal genes which are influenced by the sex of the bearer.