Question

Parent 1 is TT

Parent 2 is Tt
What will be the result of this cross?

All offspring will be tall

All offspring will be short

All offspring will be heterozygous

All offspring will carry the recessive alle

Answer 1

When crossing a parent with genotype TT and a parent with genotype Tt, the F2 offspring will have a 25% chance of being short (tt) and a 75% chance of being tall (TT or Tt).

Step-by-step explanation:

When the F1 generation (Tt) is allowed to self-pollinate, each parent will give one factor (T or t) to the F2 generation. So the F2 offspring will have four possible combinations of factors: TT, Tt, tT, or tt. According to the laws of probability, 25% of the offspring would be tt, so they would appear short. And 75% would have at least one T factor and would be tall.

Answer 2

"All offspring will be tall" is the correct answer.

Step-by-step explanation:

All the offspring carry one dominant trait T, Because of this, they will all be tall, although some will carry the recessive allele t.