In the Study of Gigord and Colleagues Using Elderflower Orchids,the

Multiple Choice

In the study of Gigord and colleagues using Elderflower orchids,the allele frequencies of yellow and purple flowers varied such that when the yellow allele started to become rare,the reproductive success of purple flowers decreased and the reproductive success of yellow-flowered individuals increased in a process known as ________.

A) overdominance
B) frequency-dependent selection
C) underdominance
D) Hardy-Weinberg stabilization
E) frequency depression