Question

In pea plants the allele for tall, T, is dominant to the allele for dwarf, t.
Which cross would produce plants in the proportion of 1 tall : 1 dwarf?

TT x Tt
Tt x Tt

Tt x tt
tt x ut​

Answer 1

Answer:Tt x tt

Explanation:

T is dominant and represents tall. t is recessive and represents dwarf. If in a plant offspring, half are tall (which could be TT or Tt) and half are dwarf (which would be tt only), then the only possible combination for the genotype of parents would be Tt x tt which therefore would give Tt (tall) and tt (dwarf) offspring.  

Therefore, the correct answer is Tt x tt

Answer 2

Answer:

Option 3 ( Tt×tt)

Explanation:

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