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

YyTtss will be tall yellow and wrinkled shaped peas. ss wrinkled is homozygous recessive in the offspring peas.
YyttSs is yellow small and smooth shaped peasin which tt is homozygous recessive in the offspring peas.