Question

If a homozygous tall plant is crossed with a heterozygous tall plant, the proportion of tall progeny would by
(a) 25%
(b) 50%
(c) 75%
(d) 100%

Answer 1

(d) 100%

A homozygous tall plant TT, on crossing with a heterozygous tall plant Tt, can give rise to two types of progeny plants, either TT or Tt, both of which will be tall. So, all offspring obtained after the cross will be tall.