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What modes of selection leads to a reduction in variation but no change in the mean?
Wiki User
∙ 11y ago
Stabilizing selection.
Wiki User
∙ 11y ago
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Why was variation the weakest concept in Darwin's theory?
Variation?!?! That was an obvious observation of naturalists that opposed Darwin's concepts totally. Unless you mean the heritability that leads to variation? Explaining that variation was the problem. Creationists of the time explained this by positing god's whimsy in designing his species, but this was shown to be nonsense as natural processes are at work in variation and this can be shown experimentally. The concept of natural selection explained how that natural variation was selected on beneficial traits. What Darwin did not understand is how that variation was passed on to progeny. His explanation was wrong.
What do directional selection and disruptive selection have in common-?
directional selection and disruptive selection both decrease genetic variation - apex
What model in which gradual change leads to species formation is called?
Natural selection is the gradual, non-random process by which biological traits become either more or less common in a population. It is a key mechanism of evolution. The term "natural selection" was popularized by Charles Darwin who intended it to be compared with artificial selection, what we now call selective breeding.
What is a sentence with the word biological evolution?
>The structural and well-organised gradual process of change means 'biological evolution'. >Variation and heridity are two basic factors of evolution. >In long term.evolution leads to existence of new species which have different characteristics than their ancestors.
Mutations?
a random error in gene replication that leads to a change
Is natural selection a process or a result of a process?
Natural selection is only the result of changing environments, mutation and the variation resulting therein. Natural selection is the process of adaptive change and the main mechanism of evolution that leads to speciation. Natural selection is a process as mutation and variation are grist to the mill of natural selection.
Natural selection acts on variation by?
Natural selection acts on variation by picking out from a population's gene pool those that are more fit to survive. More variation leads to more natural selection. For example, currently endangered cheetas are found out to have less genetic variation than other animals. As a result, if a disatrouous event occured, there are no genes that could help the cheetas survived. Thus, natural selection prevent the cheetas from reproducing as a population and they become extinct.
How does change occur in nature?
Natural selection. Which ultimately leads to evolution.Or God. Depending on your beliefs.
Explain the role of variation in evolution?
Variation plays a role in the process of natural selection because it keeps things mixed up. This is necessary so that one thing doesn't overtake another, ruling it out. If things are equal, one can't overrule another.
What common genetic variation which causes a change in the amino acid sequence in the structure of hemoglobin leads to what disease?
Sickle cell
How does the genetic code leads to variation?
hello
What is a result in a reduction of GDP?
The reduction of GDP usually leads to job loses and a drop in the growth of economy. It also leads to more imports than the exports.
What is a result of a GDP reduction?
The reduction of GDP usually leads to job loses and a drop in the growth of economy. It also leads to more imports than the exports.
What is the result in a reduction of GDP?
The reduction of GDP usually leads to job loses and a drop in the growth of economy. It also leads to more imports than the exports.
Why was variation the weakest concept in Darwin's theory?
Variation?!?! That was an obvious observation of naturalists that opposed Darwin's concepts totally. Unless you mean the heritability that leads to variation? Explaining that variation was the problem. Creationists of the time explained this by positing god's whimsy in designing his species, but this was shown to be nonsense as natural processes are at work in variation and this can be shown experimentally. The concept of natural selection explained how that natural variation was selected on beneficial traits. What Darwin did not understand is how that variation was passed on to progeny. His explanation was wrong.
Why genetic variation leads to population stability?
idfk
What are the kinds of leads in a news?
2 kinds of leads in a news: reduction lead and expansion lead
