Explain this experts pl
If two pairs of contrasting characters are involved, then the cross is termed as dihybrid cross
Inheritance of Two Genes (Dihybrid Cross)
In dihybrid cross, we consider two characters. (e.g., seed colour and seed shape)
Yellow colour and round shape is dominant over green colour and wrinkled shape.
Phenotypic ratio 9:3:3:1
Round yellow 9
Round green 3
Wrinkled yellow 3
Wrinkled green 1
1. Parents (P1) have phenotype as Round yellow and wrinkled green. Thus probability of F2 generation having same phenotype is 10:16.
2. F1 parents have phenotype as Round yellow. So probability of F2 generation having same phenotype is 9:16.
3. F1 generation have genotype as RrYy, so probability of F2 generation having same genotype is 4:16.