The population has not yet reached the carrying capacity.-apex :D
It has not reached carrying Capacity
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.
This would occur when organisms showing many genetic differences caused by mutations and genetic recombination reproduce in a changing environment.
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.
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.
The population has not reached carrying compacity is correct on apex
What population? Perhaps you mean if there were no variation for natural selection to select from.
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.
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.
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.
Genetic variation. If there were no variation in the genes/phenotype then natural selection would have nothing to select from.
It has not reached carrying Capacity
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.
How it changes in response to its environment.
This would occur when organisms showing many genetic differences caused by mutations and genetic recombination reproduce in a changing environment.
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.
Without variation it would not be selecting, just random death of identical units.
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.