Which of the following best defines a gene pool?

a)the sum of all genetic traits in a populations individuals at a given time
b)any movement of genes from one population to another
c)any movement of organisms from one environment to another
d)the random change in the frequency of an allele in a population

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing