Question

Based on the Punnett Square below, which statement below is accurate? (The trait being represented is pea color, where green is the dominant color and yellow is recessive.)
The probability of getting green pea offspring is 50% and the probably of getting yellow pea offspring is 50%.

The probability of getting green pea offspring is 75% and the probably of getting yellow pea offspring is 25%.

The probability of getting green pea offspring is 100% and the probably of getting yellow pea offspring is 0%.

The probability cannot be determined.

Answer 1

The finished punnet square will look like this. G is green (dominant) and g is yellow (recessive).

    G     g

g  Gg   gg

g  Gg   gg

If at least 1 dominant genotype is expressed, the offspring will have the dominant trait. Only if 2 recessive genotypes are present will the offspring have the recessive trait. This means that 2/4 or 50% of the offspring will be green and 2/4 or 50% of the offspring will be yellow.

Hope this helps!