Question

In a dihybrid cross for round and yellow seeds (RrYy x RrYy), what is the probability of having green and wrinkled seeds? Key: R = round r = wrinkled Y = yellow y = green

Answer 1

Dihybrid cross means that the cross occur between two different traits.

Here "Di" means two and "Hybrid" means two alleles in each trait.

Cross of round and yellow seeds give the result is 1/16 and its genotype is 9:3:3:1.

Here 9= both trait are dominant, 3= first dominant second recessive, 3= first recessive second dominant, 1= Both are recessive.