Answer:
a) Genotypes & Phenotypes in F1 generation
TtRr, Tough and Red seeds
b) Tender pods
Genotypes - ttRR (1), ttRr(2), ttrr (1)
Proportion will be 3/16
c) Red seeds
Genotypes - TTRR, TTRr (2), TtRR (2), TtRr (4)
Proportion will be 9/16
d) Tender pods & red seeds
Proportion will be 3/16
Explanation:
Tough pods (T) are dominant to tender pods (t)
Red seeds (R) are dominant to (r) green seeds
True breeding species
a) Tough pods and red seeds - TTRR
b) Tender pods and green seeds - ttrr
F1 generation -
TTRR * ttrr
TtRr
All the offspring will have TtRr genotype. The Phenotype of all offspring will be tough and red seeds.
F2 generations -
Self crossing the F1 generation species, we get -
TtRr * TtRr
Gametes - TR, Tr, tR , tr
TR Tr tR tr
TR TTRR TTRr TtRR TtRr
Tr TTRr TTrr TtRr Ttrr
tR TtRR TtRr ttRR ttRr
tr TtRr Ttrr ttRr ttrr
a) Genotypes & Phenotypes in F1 generation
TtRr, Tough and Red seeds
b) Tender pods
Genotypes - ttRR (1), ttRr(2), ttrr (1)
Proportion will be 3/16
c) Red seeds
Genotypes - TTRR, TTRr (2), TtRR (2), TtRr (4)
Proportion will be 9/16
d) Tender pods & red seeds
Proportion will be 3/16
