Question

When a cross is made between tall plants with yellow seeds (TtYy) and tall plants with green seeds (Ttyy), what proportion of the phenotype in the offspring could be expected to be tall plants with green seeds?

Answer 1

Cross = TtYy × Ttyy

Height = Tt × Tt = `3/4` tall

Seed colour = Yy × yy = `1/2` green (yy)

So, the proportion of tall plants with green seeds:

= `3/4 xx 1/2`

= `3/8`