Question

Which os these statements best sums up evolution?

A) rapid change in species’ habits and features
B) punctuated change in a population
C) change in a population through new species being made
D) change in a population through genetic variation over time

Answer 1

The correct answer is D

The process of evolution presents a change in population genetics over periods of time. Therefore, it's important to remember that we can only observe the evolution by looking at the level of the population, not on the level of an individual organism.

Evolution works trough 4 evolutionary mechanisms that change the frequency of an allele in a population, leading to evolutionary change of that population and later even species. These mechanisms are : mutations, genetic drift, gene flow and natural selection.

Answer 2

Evolution can best be summed up by statement D - change in a population through genetic variation over time. The other statements do not refer to evolutionary changes, as these are changes that occur slowly, rather than suddely or with speed.