Directional selection
Genetic variation is important for natural selection to drive evolution because it provides the raw material for natural selection to act upon. Without genetic variation, there would be no diversity in traits for natural selection to favor or eliminate, and evolution would not be possible.
I do not know if I would say " catagorically good ", but stabilizing selection does eliminate the extreme morphologies in a population of organisms. Remember the taget of selection is the individual ( gene ) and the population evolves. So, saying something that is the result of natural selection is " good " for the population is rather confused as individuals are selected. So, extreme morphologies could be " good " for a population depending on the immediate environment.
Natural selection is a term that, if you stated it fully, would say something like "The fittest individuals are naturally selected for reproduction." Unfit organisms do not survive to reproduce and pass on their genes.
No. Typically the symptoms of HD do not become apparent until long after a person would be of child bearing age.
To determine which form of natural selection is represented on the chart, it would be essential to examine the characteristics of the population depicted. Stabilizing selection favors average traits, disruptive selection favors extreme traits, and directional selection favors one extreme over the other. Without seeing the chart, it’s impossible to specify which type is shown, but you can identify the type by looking for these patterns in trait distribution.
This is caused by natural selection, and it would increase the frequency of the white alleles.
What population? Perhaps you mean if there were no variation for natural selection to select from.
it would die
In Darwin's time, it would be classified as "natural" selection.
False, dog breeding would be an example of Artificial Selection.
False, dog breeding would be an example of Artificial 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.