Geologic activity on an island physically separates a population of animals into two populations. Many generations later, when the two populations are no
longer separated, they do not interbreed. What is the result of natural selection
during this period of separation?
A.) a decrease in variation
B.) decrease in diversification
C.) increase in extinction
D.) increase in speciation

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.

answercells,tissues,organs,organ,system-organism;

levels of biological organization; organism,population,community,ecosystem,biome,biosphere,

hope this .good luck