Question

the sum total of number of phenotype and genotype produced through dihybrid cross and dihybrid cross respectively are

Answer 1

Answer :

The phenotypic ratio's of dihybrid cross (AaBb × AaBb) can be written as = (3 : 1)^2

= 9 : 3 : 3 : 1

Clearly, Total phenotypes in a dihybrid cross is = 4

Now,

The genotypic ratios of dihybrid cross is written as (1 : 2 : 1) ^2

= 2 : 4 : 2 : 1 : 2 : 1 : 1 : 2 : 1

Clearly, we get total number of genotype in a dihybrid cross = 9

So, the sum of the number of genotype and phenotype respectively by dihybrid cross and dihybrid cross is = 4 + 9 = 13.