Question

A tall plant (TT) is crossed with a short plant (tt). If the tall F1 pea plants are allowed to self-pollinate,

A) the offspring will be of medium B) all of offspring will be tall C) all of offspring will be short D) the offspring can be tall or short

Answer 1

A

Answer 2

All the F1 plants will get one allele from the TT parent - so a dominant allele - and one allele from the tt parent, so one recessive allele. So the F1 offspring's genotype will be Tt. If you self cross a Tt plant (i.e., you do a Tt x Tt cross), what do you get? This is what the question asks.