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no
there is no genetic variation for natural selection to act upon
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoYes, and the strongest will survive.
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What is one factor that affects natural selection?
Mutation is the important " starter " of the adaptive change engendered by natural selection. Variation is key to selection and without variation in organisms there would be nothing to select from for the survival and reproductive success of the organism against the immediate environment.
What happens to a population without variation?
If all the members of a species were 100% identical (no variation) natural selection would have no effect. Members of such a species would die totally randomly with no influence from the selection pressure, so no natural selection could happen.
Which is more likely to be true natural selection or evolution?
Evolution, of course. Evolution can happen without natural selection in some cases; drift, flow. Generally though, natural selection causes evolution and then, by definition, would come first.
Would evolution stop if there were no natural selection?
No, but adaptive change would be difficult. Remember, evolution is the change in allele frequency over time in a population of organisms. Mutation, genetic drift, genetic flow and other processes would continue without natural selection.
Does natural selection take place without human control?
yes natural selection takes place without human control. In natural selection it is the environment selecting the traits/alleles. However there is something called artificial selection which is evident in dog breeding. In that case humans select for the traits. Artificial selection can have detrimental effects on a population though. Some dogs have been selected for being very small and having a flat nose. These dogs are so small now that they cannot give birth naturally and have no use of their nasal passages
Why must a population have a genetic variation in order for natural selection to occur?
Without variation there is nothing to select from.
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.
Is considered an important factor in natural selection?
Mutation is the important " starter " of the adaptive change engendered by natural selection. Variation is key to selection and without variation in organisms there would be nothing to select from for the survival and reproductive success of the organism against the immediate environment.
Why must there be Variation in the population in order for natural selection?
Without the subtle differences on organisms phenotypes what would natural selection select from? All organisms in a population are variants and some survive and reproduce better than other against the background of the immediate environment and these are selected by that environmental pressure.
What must exist in a population before natural selection can act?
Competition + Variation. Classic example: Giraffes not always had long necks. There were variation in the species. When food sauces grew low competition increases and those with longer necks survived (more fruit/food at the top of trees) as they were more suited to the conditions. These long necked giraffes then breed and the offspring have long necks, thus natural selection of a "fitter" species. Hense - survival of the fittest.
Why would natural selection not occur without genetic variations on species?
Without variation it would not be selecting, just random death of identical units.
Why would evolution crease if the entire population had the same genetic makeup?
Yes. Without variation in organisms for natural selection to choose from there would be no change in allele frequency over time in the population of organisms under discussion. This is the definition of evolution, so without change over time, no evolution.
Why could natural selection not occur without genetic variation in a species?
Natural selection is a change in allele frequencies of a species which allows that species to better survive in it's environment. Without genetic variation there would be no change in the allele frequency of a species. However, with genetic variation there is a chance that one particular member of a species will be born with a random mutation which allows it to better survive in it's environment, thus increasing the chance that it will reproduce and pass on that genetic trait to it's offspring who in turn will pass it onto their offspring and so on. Without genetic variation all members of the species and their offspring would be exact duplicates of each other and no particular member would have an advantage over another.
What would be the consequences for evolution if there were no reproductive variation?
There would be no adaptive change due to natural selection and only genetic drift due to random events and gene flow due to population mixing would occur. Alleles would change, but without reproductive variation speciation could not occur.
What two limits to evolution by natural selection?
Natural selection is limited by the ability of the population to produce variation. This in turn is limited by the amount of mutation a lineage can survive. Too many mutations, and the effect becomes detrimental. Too few, and the population may not be able to adapt fast enough to changing circumstances and go extinct.
What was Charles Darwin's theory on the driving force of evolution called?
Darwin claimed it was the process of natural selection that drove evolution. However this is incomplete, without both a process that creates variation and the process of natural selection evolution could not work. There are many processes that create variation (e.g. mutation, crossover, transformation, infection, conjugation, polyploidy).
Can natural selection exist with out evolution?
Perhaps not, but evolution can exist without natural selection.
