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The population has not yet reached the carrying capacity.-apex :D

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Jaythedon

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the birds do not compete for resources -APEX
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11y ago

It has not reached carrying Capacity

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Q: Why would natural selection not occur in this population?
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Why would natural selection not occur in this poplutation?

What population? Perhaps you mean if there were no variation for natural selection to select from.


Why must there be variation in a population in order for natural selection to occur?

What would there be to select from if all the organisms in a population were not different in morphology and behavior. Some of these differences are reproductively successful against the immediate environment, and that environment is the natural selector.


If a population consists only of individuals cloned from a single organism then a Lamarck was right about species change for that populaiton b natural selection would not occur in that population?

Neither. Lamarckian evolution does not take place at all; almost all of his concepts are now known to be incorrect. The population will still undergo mutation, and natural selection for beneficial mutations and against harmful ones will still occur.


Why are variations in a species needed for natural selection to occur?

What would be selected if organisms did not have differences that lead to better survival and reproduction, or the opposite. That is all natural selection is.


What characteristic within populations cause natural selection to occur?

Genetic variation. If there were no variation in the genes/phenotype then natural selection would have nothing to select from.


Why would natural selection not occur in population?

It has not reached carrying Capacity


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 best explains a natural selection in a antelope population?

How it changes in response to its environment.


The highest rate of natural selection would probably occur when?

This would occur when organisms showing many genetic differences caused by mutations and genetic recombination reproduce in a changing environment.


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.


Why would natural selection not occur without genetic variations on species?

Without variation it would not be selecting, just random death of identical units.


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.