Milk secretion and beard growth,both the trai | vedclass

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(A) Milk secretion and beard growth are examples of sex-limited traits.Sex-limited traits are autosomal traits that are expressed in only one sex,even

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Sex limited

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(A) Milk secretion and beard growth are examples of sex-limited traits.Sex-limited traits are autosomal traits that are expressed in only one sex,even though the genes for these traits are present in both sexes. Their expression is regulated by sex hormones.$(i)$ Milk secretion is a trait limited to mammalian females because it requires the presence of female sex hormones.(ii) Beard growth is a trait limited to males because it is stimulated by the presence of male sex hormones (androgens).Since these traits are controlled by autosomal genes but their expression is restricted to a specific sex due to hormonal influence,they are classified as sex-limited traits.

Column-$I$	Column-$II$
$(1)$ Inheritance of two genes	$(a)$ $ABO$ blood group
$(2)$ Incomplete dominance	$(b)$ $1:2:1$
$(3)$ Codominance	$(c)$ $9:3:3:1$
$(4)$ Inheritance of one gene	$(d)$ $3:1$

Milk secretion and beard growth,both the traits are

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Match the following:

Column-$I$ Column-$II$

$(1)$ Inheritance of two genes $(a)$ $ABO$ blood group

$(2)$ Incomplete dominance $(b)$ $1:2:1$

$(3)$ Codominance $(c)$ $9:3:3:1$

$(4)$ Inheritance of one gene $(d)$ $3:1$

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