Natural selection, genetic drift, and gene flow are the mechanisms that cause changes in allele frequencies over time. When one or more of these forces are acting in a population, the population ...

Change can also occur by genetic drift or gene flow. What does ‘survival of the fittest’ mean? In terms of evolution, an animal that is ‘fit’ is one that’s adapted to its environment. This concept is ...

As a species, we have not shed the influence of evolution by natural selection — both bad and good. But evolution has not only led to challenges in our ability to behave morally.

Natural selection can slow evolution, maintain similarities across generations. ScienceDaily. Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2023 / 08 / 230823165407.htm.

In interviews, Fair suggested that natural selection is only a theory, other theories of origins should be presented, we should “teach the controversy,” and selection leads to “Darwinism ...

It's about the mechanisms responsible for evolution, and why Darwin's contribution--natural selection-- is not the only one, contrary to many popular accounts. At Pharyngula, PZ Myers elaborates : ...

Natural Selection: The Idea The best way to appreciate evolution by natural selection is to consider organisms whose life cycle is short enough that many generations can be observed.

The early evolution of the genus Homo, which is estimated to have emerged 2.8 million years ago, is characterized by variation in fossils. In the past, this has been attributed to natural selection.

Lauren Schroeder studies the processes that have driven human evolution. She has a tattoo of her favorite fossil, a 2-million-year-old Homo habilis skull.. Blake Eligh/University of Toronto ...