Question

using punnett square, TRY TO FIND OUT THE NATURE OF OFFSPRING OF A TEST CROSS. WHAT RATIO DID U GET ? USING GENOTYPES OF THIS CROSS, CAN U GIVE A GENERAL DEFINITION FOR A TEST CROSS???

Answer 1

yes test cross is defined as a back cross performed between the F1 hybrid & its recessive parent.
parent:F1hybrid ×homogenous recessive
Gamete:RrYy ×rryy
/ /
RY Ry ry ry. ry
product :-) RrYy, Rryy ,rrYy,rryy.
phenotypic :-) 1:1:1:1
Round Yellow:1
Round green:1
wrinkle yellow; 1
wrinkle green;1

Answer 2

Answer:

the ratios are as follows

Explanation:

phenotypic ratio=1:1:1:1

genotypic ratio=1:1:1:1