Question

In peas, Tall (T) is dominant over dwarf (t), Yellow is dominant over green (y), and Smooth (S) is dominant over wrinkled (s). What fraction of the offspring in the following cross would be homozygous recessive for all gene pairs in the cross: YyTtss x YyttSs?

Answer 1

hope it helps-------------

Answer 2

1.Gametes formed by YyTtss are YTs,Yts, yTs and yts.
2.Gametes formed by YyttSs are YtS,Yts,ytS and yts.
The homozygous recessive offspring proportion of yyttss out of total resultant offsprings will be 1 out 16 or 1/16by punnet square method. Hope it has helped.