Question

In garden pea, tall stem(T) is dominant over dwarf stemt mou
seed(R) is dominant over wrinkled seed (r):
Yellow cotyledons(Y) is dominant over green cotyledonstys:
inflated pods(S) dominant over constricted pods(s);
green pods(G) dominant over yellow podst) and axial flower
ominant over terminal flower(a). Find out the phenotypic ratio
each cross
a) Tt Rr XTtre b) TTrr XTI Rr c) It RrX TI
d) Ttre XTERI
Yy Ss X Yyss
Yyss X Yys
yy Ss X Yyss
h) Yyss X Yyss
Ggrr X Gore
i) Gorr XGgrr
AaTt Xanto
Gay XG
e)
0​

Answer 1

When RRYY is crossed with rryy, all F1 progeny will be Round in shape with yellow colour with RrYy genotype. RrYy will produce male and female gametes as RY, Ry, rY and ry. Thus F2 generation will produce offspring:

1) Round seeds with yellow cotyledon (9)

2) Round seeds with green cotyledon(3)

3) Wrinkled seeds with yellow cotyledon(3)

4) Wrinkled seeds with green cotyledon(1)

Therefore option B is the correct