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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-$II$
$(a)$ $1 : 2 : 1$	$(i)$ Test cross
$(b)$ $3 : 1$	$(ii)$ Law of Dominance
$(c)$ $9 : 3 : 3 : 1$	$(iii)$ Incomplete Dominance
$(d)$ $1 : 1 : 1 : 1$	$(iv)$ Law of Independent Assortment
	$(v)$ Law of Segregation

Column-$I$	Column-$II$
$(a)$ Pleiotropic gene	$(i)$ Both alleles express equally
$(b)$ Co-dominance	$(ii)$ Change in nucleotide
$(c)$ Epistasis	$(iii)$ One gene shows multiple phenotypic expression
$(d)$ Mutation	$(iv)$ Non-allelic gene interaction

Column – $I$	Column – $II$
$(1)$ Failure of cytokinesis	$(p)$ To study inheritance of particular traits
$(2)$ Trisomy of $21$	$(q)$ Polyploidy
$(3)$ Error of metabolism	$(r)$ Down's syndrome
$(4)$ Pedigree analysis	$(s)$ Phenylketonuria

Milk secretion and beard growth,both the traits are

Similar Questions

Match the following columns correctly:
Column-$I$ Column-$II$
$(a)$ $1 : 2 : 1$ $(i)$ Test cross
$(b)$ $3 : 1$ $(ii)$ Law of Dominance
$(c)$ $9 : 3 : 3 : 1$ $(iii)$ Incomplete Dominance
$(d)$ $1 : 1 : 1 : 1$ $(iv)$ Law of Independent Assortment
$(v)$ Law of Segregation

Match the Column-$I$ with Column-$II$:

Column-$I$ Column-$II$

$(a)$ Pleiotropic gene $(i)$ Both alleles express equally

$(b)$ Co-dominance $(ii)$ Change in nucleotide

$(c)$ Epistasis $(iii)$ One gene shows multiple phenotypic expression

$(d)$ Mutation $(iv)$ Non-allelic gene interaction

Differentiate between the following:
$(a)$ Dominant and Recessive
$(b)$ Homozygous and Heterozygous
$(c)$ Monohybrid and Dihybrid.

Presence of a single allele of a character in a diploid organism is known as $:$

Match the following:

Column – $I$ Column – $II$

$(1)$ Failure of cytokinesis $(p)$ To study inheritance of particular traits

$(2)$ Trisomy of $21$ $(q)$ Polyploidy

$(3)$ Error of metabolism $(r)$ Down's syndrome

$(4)$ Pedigree analysis $(s)$ Phenylketonuria

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