Part A
In a high-alcohol environment, what changes occurred in the fruit fly allele that produced the fast alcohol-metabolizing enzyme?
A. The allele was passed only to the male flies.
B. The allele became less frequent in the population over time.
C. The allele did not work as well as the slow alcohol-metabolizing enzyme.
D. The allele became more frequent in the population over time.
Answer (1)
In high-alcohol environments, the allele for fast alcohol metabolism increased in frequency in fruit fly populations due to natural selection. This is an example of how genetic traits can evolve in response to environmental pressures. As a result, the beneficial allele provided a survival advantage, leading to its prevalence over time. ;
