Natural selection is a mechanism for?

Answer 1

a. Adaptations beneficial in one habitat should generally be beneficial in all other habitats as well.

b. Well-adapted individuals leave more offspring, and thus contribute more to the gene pool, than poorly adapted individuals.

c. Different species that together occupy the same habitat will adapt to that habitat by undergoing the same genetic changes.

d. Natural selection is the sole means by which populations can evolve.

e. Adaptations beneficial at one time should generally be beneficial during all other times as well.

Answer 2

Natural selection is the process in which the more favorable traits due to mutation that are in a select few in a population produce more offspring then others. An example of this is bacteria resistant to antibiotics due to the faster reproduction of the resistant bacteria over the non resistant ones.

Answer 3

Natural selection is a mechanism whereby traits are selected to help the survival of organisms which are best suited to a particular environment. No new information is created by this process so it is limited to the genetic information already existing within the gene pool of a population of organisms, or introduced via random mutations, including gene duplication events.

It is commonly regarded as a mechanism by which evolution happens and formed a key part of Darwin's original theory. One great example of the selective force of nature concerned the ratio of black to white moths in England. Moth coloration is the result of random fluctuations in genes. As coal use increased, trees coated with soot made it more difficult for birds to pick out the darker colored moths, so the ratio of dark moths to light moths increased. When coal used declined, the moth population drifted back to its original preponderance of lighter colored moths. Darwin noted evolutionary trends in the beak lengths of Galapagos Island finches, and natural geographic variations in pigeon populations. All of these are evidence indicating the power of natural selection as a mechanism for evolutionary change.

Answer 4

Natural selection is the process by which traits are passed down through generations due to factors which affect the survival or reproductive capabilities of a population.

Answer 5

Survival of the fittest.