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"Natural selection is the process by which heritable traits that make it more likely for an organism to survive and successfully reproduce become more common in a population over successive generations. It is a key mechanism of evolution." - Wikipedia.org
They key words in this statement in which describe Natural Selection is: Successive Generations. Meaning more than one, or even a few generations. Therefor your time in which an evolutionary trait takes to develop depends on two main factors: The type of Organism that you are studying, and the environment in which it lives. If there are less "X" factors then the Organism will be able to advance much more quickly.
What else can I help you with?
What did Mayr take from Darwin's work?
Mayr showed that Charles Darwin's theory of natural selection applies to the evolution of genes at the molecular level.
Does natural selection work on a variation already present in a population?
Yes.
Why is variation important for natural selection and what are the main sources of this variation?
Without variation natural selection would have nothing to select from that would confer survivability and reproductive success. on the organisms being selected against the organisms conspecifics and the immediate environment. Mutation and sexual recombination provide the main sources of this variation that is needed to make selection work. Mutation is the variation presented that causes the real adaptive change that can lead to speciation.
What is meant by this statement Natural selection is an editing mechanism rather than a creative process?
Possible nothing. Natural selection produces combinatorial genes that work in amazing ways incrementally. The vertebrate eye, for instance. Naturally, those organisms that do not reproduce successfully are ' edited ', but selection works on the molecular level to make organisms not only fit, but fit enough.
Why does natural selection continue to work over time?
Natural selection creates a stronger species that is able to live longer and produce more. It continues to work because after a few generations, the traits will become common in the population.
What comes first mutation or natural selection?
Natural selection can only work on genetic variation that already exists. So mutation comes first, then natural selection.
How does natural selection work for or against an organism?
Natural selection reduces the number of fertile offspring an organism may raise.
Why does natural selection work on organisms phenotypes rather than their genotypes?
This is backward, natural selection works on genotype not phenotype.
How do variation and natural selection work together to cause evolution?
They help each other by gradually accumulate in a species, while unfavorable ones may disappear. Over a long time, natural selection can lead to changes.
What did Mayr take from Darwin's work?
Mayr showed that Charles Darwin's theory of natural selection applies to the evolution of genes at the molecular level.
Does natural selection work on a variation already present in a population?
Yes.
Why was Charles Darwin work important?
because he created the natural selection
Time why does natural selection continue to work?
Natural selection creates a stronger species that is able to live longer and produce more. It continues to work because after a few generations, the traits will become common in the population.
Why does natural selection continue work over time?
Natural selection creates a stronger species that is able to live longer and produce more. It continues to work because after a few generations, the traits will become common in the population.
Who proposed a theory of evolution by natural selection similar to Darwin?
Alfred Russel Wallace, a contemporary of Charles Darwin, independently proposed a theory of evolution by natural selection that was similar to Darwin's. Wallace's work on natural selection prompted Darwin to publish his own views on the subject. The two scientists jointly presented their work in a paper in 1858.
Evolution by natural selection works best on populatin having no variation?
Evolution by natural selection actually relies on variation within a population. Without variation, there would be no genetic differences for natural selection to act upon, leading to no evolution. Variation provides the raw material for natural selection to work with, allowing beneficial traits to be favored and passed on to future generations.
How would you use evolution natural selection adaptation and fitness in a sentence?
An important mechanism in evolution is natural selection, which allows populations to develop adaptations to changing circumstances based on the fitness landscape of the environment. Nah, still doesn't work. I'm no good at long sentences.
