Question

MULTIPLE CHOICE!! In a population of plants, the allele for long stems (S) is completely dominant over the allele for short stems (s). If 35% of the population has short stems, calculate the percentage of the population that is expected to be heterozygous (Ss).

48 percent

59 percent

41 percent

17 percent

Answer 1

41 percent

Answer 2

I think its 48%

\[p + q = 1\]\[p^2 + 2pq + q^2 = 1\]\[q^2 = 0.35 \rightarrow q = 0.59 \rightarrow p = 0.41\]\[Heterozygous: 2pq = 2 \times 0.41 \times 0.59 = 0.48 \rightarrow 48%\]