Question

Solve the following problems by showing genetic crosses:
1) In garden pea, tall stem(T) is dominant over dwarf stem(t); round
seed(R) is dominant over wrinkled seed(r):
Yellow cotyledons(Y) is dominant over green cotyledons(y);
inflated pods(S) dominant over constricted pods(s);
green pods(G) dominant over yellow pods(g) and axial flowers(A)
ominant over terminal flower(a). Find out the phenotypic ratio of

each cross:
a) Tt Rr X Tt rr
b)
TTrr XTt Rr
c)
tt RrX Ttrr​

Answer 1

Phenotype generally refers to the observable or measurable, structural or functional characteristic of an individual which is a result of gene products brought to expression.

Phenotypic ratio of:-

(a) Tt Rr × Tt rr → 3 : 3 : 1 : 1

(b) TT rr × Tt Rr → 4 : 4

(c) tt Rr × Tt rr → 1 : 1 : 1 : 1

Kindly refer to the attachment for further details.