Question #afbac
2 Answers
Animals with detrimental adaptations are killed off.
Explanation:
If an adaptation is bad, natural selection will kill of the population containing the not helpful traits. If the adaptation is so bad, then the population will be completely killed off, to the point of extinction.
Natural selection's only function is extinction.
Explanation:
Natural selection causes extinction of organisms that are unable to adapt to changing environmental conditions. Most species of organisms have a large degree of variations in the information in the DNA. When the environment changes the members of the species population that have favorable variations of DNA information will survive and pass those favorable traits on to their offspring.
If no members of a species population have DNA information that allows the organisms to survive the species will become extinct. A possible example would be the extinction of the dinosaurs. The climate of the Mezozoic Era was much more uniform and warmer than the present climate. The large cold blooded dinosaurs were not well adapted to the extremes of cold and heat found in the present environment. The dinosaurs are now extinct.
The Cheetah of East Africa are so well adapted to the present environment that there is little or no genetic differences in the DNA information in the population. A change in the environment could easily cause the Cheetah to become extinct.
Natural selection causes the extinction of populations that are not well adapted to the environment or that can not adapt to changing environmental conditions. Natural selection can not create information it can only cause the extinction of species.
