Cavener and Clegg (1981)demonstrated natural selection by observing the cumulative change in allele frequencies in populations of Drosophila melanogaster that were subjected to high levels of ________.
A) mercury
B) carbon dioxide
C) alcohol
D) sugar
E) nitrous oxide

Question

Quizplus · Accepted Answer

Cavener and Clegg subjected populations of Drosophila melanogaster to high levels of alcohol, which acted as a selective pressure for individuals with higher alcohol tolerance. This led to a cumulative change in allele frequencies over time, demonstrating natural selection in action.

Cavener and Clegg (1981)demonstrated Natural Selection by Observing the Cumulative