Question

In the case of pea plants, tall (T) is dominant over dwarf (t). If in the plant offsprings, half are tall and half of which are dwarf then what would be the genotype of parent generation?

• A. Tt x tt
• B. Tt x Tt
• C. TT x tt
• D. tt x tt
• E. All of the above

Answer 1

Answer: (A)

Tt x tt

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 option A.