Question

In Section 12.3, “Laws of Inheritance,” an example of epistasis was given for the summer squash. Cross white WwYy heterozygotes to prove the phenotypic ratio of 12 white:3 yellow:1 green that was given in the text.

Short answer

Crossing with the help of Punnett square.

Step-by-step solution

Step. 1 Introduction

The expression with one gene is altered by that of the expression with one maybe more separately genetic inheritance, which is termed as epistasis.

Step. 2 Explanation

Having the gametes WY, Wy, wY, as well as wy for every individual The progeny of all 12 offspring which exhibit a dominant W trait would be white. Yellow progeny among us are homozygous recessive with w and still display a dominant Y gene. Green would be the color of the leftover wwyy offspring.

	WY	Wy	wY	wy
WY	WWYY	WWYy	WwYY	WwYy
Wy	WWYy	WWyy	WwYy	Wwyy
wY	WwYY	WwYy	wwYY	wwYy
wy	WwYy	Wwyy	wwYy	wwyy