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
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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.
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