0
How does evolution by natural selection affect the biodiversity of life on earth?
Wiki User
∙ 14y ago
It merely increases biodiversity. For example if twenty dinosaurs existed only and ten migrated to a completely different habitat the migrants would either go extinct or change so much they would seem like a new species. So, evolution makes biodiversity even more diverse than it is, only if the species don't go extinct.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoSo basically, natural selection is when traits become more likely to occur b/c they give an advantage to an organism. So if a trait is becoming more common, my guess is that biodiversity would go down. HOWEVER. When a trait is still a mutation, when the organism's trait is rare, biodiversity goes up...so it's a negative effect. Got it?
Add your answer:
Earn +20 pts
How does natural variation affect evolution?
Natural selection (the driving force of evolution) is the selection of genetic variations by how they effect the organism's chances of survival or reproduction. If they diminish it's chances, the organism or it's immediate offspring die and the gene is gone. If the genetic variations increase it's chances, then it survives. Without genetic variations there can be no evolution. Natural selection is the selection (by environmental pressures) of those variations.
Does an animal's environment affect or does it not affect its adaptation?
This is the fundamental premise of the Theory of Evolution by Natural Selection; the environment has a fundamental impact on the adaptations and evolution of organisms. The environment "selects" for those specimens that survive to have more offspring. Those animals that cannot survive are selected against.
Which does natural selection affect populations or individuals?
Populations evolve, but individuals are selected. Natural selection affects individual organisms.
How does environmental pressure affect natural selection?
When nothing happens to exert strong population pressure on that population, natural selection favors the allele frequency already present. When mutations cause new traits, natural selection weeds these traits out because they're not as efficient as the others.
Does the extent of sexual dimorphism in a species affect the rate of evolution in that species?
Perhaps, coupled with sexual selection. Take the elephant seal. The preference of females for large males to head the harems drove the evolution of larger and larger variance in the size of the males to the females and rather quickly.
How does natural selection affect survival?
Natural selection is the process which determines the shark's evolution. It is humankind that is threatening the sharks' survival.
What other theories are there except for natural selection?
Evolution by natural selection is currently the only viable theory explaining the diversity of life. However, the mechanism of natural selection is not the only mechanism to affect evolution. There are phenomena such as genetic drift, biased gene conversion, intragenomic conflict, and so on, that aren't exactly the same as natural selection (although they are all intertwined and all affect one another), but do affect the direction of evolution.
How does genetic variation and environmental factors affect evolution by natural selection?
de
How genetic variation and environmental factors affect evolution by natural selection?
de
How does nonrandom mating affect evolution?
Non-random mating is otherwise known as sexual selection. Some see this as distinct from natural selection, but I think that sexual selection is merely a form of, or perhaps more a complication of natural selection. Selection, natural or sexual, is the effect that "guides" evolution, that allows evolution to produce populations suited to their environment.
How does speciation process affect evolution?
Speciation adds to biodiversity. Hence it affect the evolution of best suited forms to come up.
Is natural selection the only force that drives biological evolution?
No. Natural selection requires reproductive variation to work on. Besides reproductive variation and natural selection, there are various forces, biochemical as well as population dynamical, that affect the allelic composition of a population.
How can mutation affect evolution?
Mutation can serve up the raw variation that natural selection selects from, thus alleles are changed over time in populations of organisms; evolution.
How does natural variation affect evolution?
Natural selection (the driving force of evolution) is the selection of genetic variations by how they effect the organism's chances of survival or reproduction. If they diminish it's chances, the organism or it's immediate offspring die and the gene is gone. If the genetic variations increase it's chances, then it survives. Without genetic variations there can be no evolution. Natural selection is the selection (by environmental pressures) of those variations.
What are your opinions on earth's climate change and how it can affect the evolution of biodiversity?
Climate change could reduce biodiversity by reducing the populations of many different types of plants and animals.
Does an animal's environment affect or does it not affect its adaptation?
This is the fundamental premise of the Theory of Evolution by Natural Selection; the environment has a fundamental impact on the adaptations and evolution of organisms. The environment "selects" for those specimens that survive to have more offspring. Those animals that cannot survive are selected against.
How does selection affect natural selection?
Organisms are affected by Natural Selection because Inherited characteristics affected the likelihood of an organism's survival and reproduction.
