Question

The heterozygous round yellow seeded pea plants were selfed and total 400 seeds are collected. What is the total number of seeds with first dominant and second recessive traits?

Answer 1

dominant and recessive trait in dihybrid is 3/16. so,

400×3/16= 76

Answer 2

Answer:

According to Mendel’s Law, for round yellow seeded pea plants, round is the dominant trait and yellow is the recessive trait.

After combining these two traits, there are 16 progenies as a result of hybrid processes.

As there are 400 seeds, there should be 25 seeds for each progeny.

According to the ratio 9:3:3:1; numbers of seeds with the first dominant trait is 9 x 25 = 225 while the numbers of seeds with the second recessive trait is 25.