Question

Explain Mendel's laws of dihybrid cross.

Answer 1

Dihybrid cross : 2 contrasting charecters are studied in this cross.

suppose we have taken homozygous dominant Round Yellow seeded plant and we cross this with wrinkeld green seeded plant which is homozygous recessive.

Parent,

Round Yellow $\times$ Wrinkled green

RRYY eeyy

Gamates,

RY $\times$ ey

$F_1$ generation : Re Yy

here we can observe that in $F_1$ - all are Yellow Round (but heterozygous)

lets do selfing of these

i.e. Re $\times$ Yy