well, there are a few meanings...
1. the area of variation between upper and lower limits on a particular scale.
2. a set of different things of the same general type.
The other events that most likely occurred during the same time period would be; An environmental change that did not favor the individuals in the population with the allele most likely led to the change in allele frequency; because the allele frequency decreased by so much, there would had to have been a decrease in the population within a three generation period of time.
Cancer is just cells multiplying, thinking they are making an organ, but they aren't. They are making what is know as a tumor. Each gland makes a different hormone and most make more than one. The hormones then travel from the gland to its target cells and connect to a part . back after other treatments or it may stop or slow the growth of a cancer for some time.
Answer:
O the process in which inherited traits of a population change over many generations
Explanation:
The traits of a populations evolve or "change" over many generations