Question

According to Mendel’s law of dominance, we would expect _________ percent of the offspring to have white flowers.
Responses
A 00
B 2525
C 5050
D 7575

Answer 1

According to Mendel's law of dominance, when a dominant trait is present, it will mask the presence of a recessive trait. If you're looking at a typical Mendelian cross involving one dominant trait (like purple flowers) and one recessive trait (like white flowers), the expected offspring ratio in the case of a heterozygous cross (Pp x Pp) would be:

- 25% homozygous dominant (PP)
- 50% heterozygous dominant (Pp)
- 25% homozygous recessive (pp)

In this case, the white flower trait would be the recessive one (pp). Therefore, you would expect **25 percent** of the offspring to have white flowers.

So the correct answer is **B 25**.