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The natural selection process is a gradual one and is found to pose a gradual effect on the genes because the nitrogenous base bonds in the genes are not an easy task to alter and the hydrogen bonds existing between these bases would change according to change in the environmental barriers that arise out of catastrophes to which the selection has to incur. So the gradual modification is found to be observed in the level of genes in case of natural selection in animals. This was the case for Galapogous island finches in case of Darwinian studies in natural selection. The genotype variations are the gradual ones leading to changes in the phenotype of the organisms.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoSelection acts directly on phenotype...expressed traits that decrease an individual's chances of surviving to reproductive age. Many alleles are rare enough that expression is almost nil so the trait remains hidden in the population generation after generation at the same frequency.
Domestic descendants of wild rabbits are a panoply of colors, all part of the gene pool where those colors were latent...or quickly eaten.
Dominant alleles are directly affected by natural selection only because phenotype and both the homozygous and heterozygous genotypes are the same meaning if they were a non-viable mutation they would potentially be 100 selected against in a
very few generations.
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Why does the environment act on natural selection?
I know of no government that acts, in any direct or significant way, on natural selection.
Can natural selection act upon body shape?
Yes, that would be called the Homologous structure, and that changes in natural selection.
Can natural selection occur without variation in a population?
no there is no genetic variation for natural selection to act upon
Does natural selection act on genotypes?
Indirectly, yes it does. But it can only act on genotypes through their phenotypes.
Natural selection can only act upon a certain trait if the trait is?
heritable
Is it true natural selection can act upon an individuals genotype the external of genes?
False
What level does natural selection occur at?
natural selection occurs when animals need it
Does natural selection act on the phenotype?
yes
Why does the environment act on natural selection?
I know of no government that acts, in any direct or significant way, on natural selection.
Can natural selection act upon body shape?
Yes, that would be called the Homologous structure, and that changes in natural selection.
Can natural selection occur without variation in a population?
no there is no genetic variation for natural selection to act upon
What does natural selection only act on?
It acts on populations.
Natural selection can only act on traits?
Yes, traits that are phenotypical in nature and confer some survival and reproductive advantage, then the alleles that gave rise to these traits become more frequent in the populations gene pool and evolution takes place. So, natural selection is acting on genes in the individuals and population are evolving from this process.
Why does natural selection act directly on genes?
Selection acts directly on phenotype...expressed traits that decrease an individual's chances of surviving to reproductive age. Many alleles are rare enough that expression is almost nil so the trait remains hidden in the population generation after generation at the same frequency. Domestic descendants of wild rabbits are a panoply of colors, all part of the gene pool where those colors were latent...or quickly eaten. Dominant alleles are directly affected by natural selection only because phenotype and both the homozygous and heterozygous genotypes are the same meaning if they were a non-viable mutation they would potentially be 100 selected against in a very few generations.
Does natural selection act on genotypes?
Indirectly, yes it does. But it can only act on genotypes through their phenotypes.
Why does natural selection act on the phenotype and not the genotype?
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Is inheritance a requirement for natural selection?
Yes it does. Without variance in the organisms genome, that gives variance to the phenotype, there would be nothing for natural selection to select from.
