You are studying a population of cactus and you discover tha

You are studying a population of cactus and you discover that there are two spine lengths (short and long) that follow Mendelian inheritance patterns. Breeding data suggest that the long-spine allele (LS) is dominant to the short-spine allele (SS), and when you examine plants from your wild population you find 72 plants (out of 200) with the long-spine phenotype. Based on this, what would you expect to be the frequency of the SS allele?

11.3%

Solution

Answer:80%

Explanation:

long-spine population= 72 out of 200

Therefore, short-spine population = 200-72=128

Short-spine population (SS SS) frequency= 128/200 = 0.64

The frequency of SS allele = 0.8 = 80%