EVOLUTION
EVIDENCE FOR EVOLUTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
the fossil record only
|
|
|
neither the fossil record nor observations of living organisms
|
|
|
observations of living organisms only
|
|
|
on both the fossil record and observations of living organisms
|
Detailed explanation-1: -The mechanism that Darwin proposed for evolution is natural selection. Because resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.
Detailed explanation-2: -Darwin’s observations that led to his theory of natural selection are: Overproduction-all species will produce more offspring than will survive to adulthood. Variation-there are variations between members of the same species.
Detailed explanation-3: -As one of the founders of the “modern synthesis” of evolution, paleontologist George Gaylord Simpson argued that the fossil record supports Darwin’s theory that natural selection acting on random variation in a population is the driving force behind evolution.
Detailed explanation-4: -Often, fossil species first appear in older rocks and disappear in younger rocks, providing evidence that species change. Changes in climate, indicated by geology, correlate with changes in fossil species and their adaptations, supporting the idea of natural selection.