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Mutation, a copying error in the replication of DNA, can give rise to variation in an organisms phenotype and if this new phenotype is beneficial to survival and reproductive success ( as little as 1% ) it will be selected naturally against the immediate environment, then if this so selected organism leave many descendents with the same beneficial traits then the populations gene pool will change in allele frequency and you have evolution.
( a 19th century sentence Darwin would be proud of! )
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoEvolution is driven by natural selection. If there was no variation within the population, there would be nothing to "select" and the population would never evolve.
Wiki User
∙ 11y agoEvolution is the effect of natural selection acting upon variant offspring.
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What are the three things biodiversity emerges from?
extinction, natural selection, and mutations
How does natural selection affect the frequency of mutatons?
Natural selection works on mutations that are already in place. The environmental changes will select for certain mutations if the selective pressure is supplied long enough for several generations of offspring to carry a higher percentage of the mutation.
Are new alleles made by natural selection?
No - natural selection does not create new alleles. Variation in alleles needs to exist in the population in order for natural selection to occur. Natural selection will involve the change in allele frequencies over time, but it does not create new alleles. New alleles are the result of mutations.
What causes mutations?
sunlight, radiation, and smoking
How do mutations relate to traits?
Mutations cause certain traits.
What is a mutation and how does it relate to evolution?
A mutation is any change in the DNA. Mutations provide the genetic variation that evolution by natural selection needs to select from.
Natural selection is due to?
beneficial mutations
Which mutations are NOT subject to natural selection - lethal physiological neutral or morphological?
Neutral mutations confer no benefits or handicaps and are therefore not affected by natural selection.
What are the three things biodiversity emerges from?
extinction, natural selection, and mutations
How does slow change over time occur genetically?
Through mutations in DNA, and natural selection of advantageous mutations.
What are the pressures of natural selection?
Everything from available food to climate will cause the changes we see in natural selection. Random mutations occur constantly and when those mutations are beneficial for life, the genetic code is more likely to be passed on to future generations.
How do natural selection cloning and selective breeding lead to evolutionary change?
The only thing that causes evolution is Mutations due to forced natural selection of desired alleles.
How does natural selection affect the frequency of mutatons?
Natural selection works on mutations that are already in place. The environmental changes will select for certain mutations if the selective pressure is supplied long enough for several generations of offspring to carry a higher percentage of the mutation.
How did Darwin relate Malthus's ideas to evolution by natural selection?
By science
Are new alleles made by natural selection?
No - natural selection does not create new alleles. Variation in alleles needs to exist in the population in order for natural selection to occur. Natural selection will involve the change in allele frequencies over time, but it does not create new alleles. New alleles are the result of mutations.
What causes mutations?
sunlight, radiation, and smoking
Relate natural selection to the beak sizes of finches?
The numbers of birds with different beak shapes are changed by natural selection in response to the available food suply.
