Question

Out of tall and dwarf plants, ................ trait is dominant.

• A. Tall
• B. Dwarf
• C. Both A and B
• D. None of these

Answer 1

Answer: (A)

Tall

• The dominant trait in genetics is a trait that will appear in the offspring if one of the parents contributes it.
• Mendel started out with plants that "bred true". That is, when tall plants were self-pollinated (or cross-pollinated with others like them), plants in the following generations were all tall; when the short plants were self-pollinated (or cross-pollinated with others like them) the plants in following generations were all short.
• Mendel found that if true-breeding Tall [T] plants are crossed (bred) with true-breeding short [t] plants, all the next generation of plants, called as F${}_1$, are all tall. It shows that tallness is the dominant trait.