The color of mashed fruit (or fruit skin colo | vedclass

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(B) The color of fruit in certain plants (like summer squash) is a classic example of $Dominant 	ext{ } epistasis$. In this interaction, a dominant a

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Dominant epistasis

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(B) The color of fruit in certain plants (like summer squash) is a classic example of $Dominant 	ext{ } epistasis$. In this interaction, a dominant allele at one locus masks the expression of alleles at another locus. For example, in summer squash, the $W$ gene (white fruit) is dominant and masks the expression of the $Y$ gene (yellow fruit), resulting in white fruit regardless of the $Y$ genotype. Thus, the correct answer is $Dominant 	ext{ } epistasis$.

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

The color of mashed fruit (or fruit skin color in certain varieties) is an example of ........

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Match the columns:
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

Tjio and Levan's contribution is very significant because they

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