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It depends on which form is being favored by selection.
In directional selection, one of the extremes of the "bell curve" has the advantage. In this case selection will "drive" the variation toward one end. Example: a population of birds where long, narrow beaks have an advantage; variation will be pushed toward longer, narrower beaks until that stops being advantageous.
On the other hand, sometimes selection favors the "middle of the road" form. In this case, the variation will be driven toward the middle and the extremes will drop away. For example, a population of moths where a medium shade of coloring has the advantage (not too light or too dark); in this case, you'll get more gray moths, less black and white. This is "stabilizing selection".
What else can I help you with?
How natural selection takes place?
simply put, only the strong will survive
Is natural selection fast or slow process?
Evolution is the observed effect of natural selection acting on reproductive variation. Natural selection is a continuous process. The rate at which natural selection changes allele frequencies depends on the effect of the allele in the world. If the allele considered provides a significant reproductive benefit when compared to rival alleles, it will spread throughout the population gene pool much faster than the rival alleles.
Why are low level Mutations advantageous to an organism?
Low level mutations can provide variation within a population, which increases the chances of some individuals being better adapted to changing environments. This variation allows for natural selection to act on the population, promoting the survival of individuals with beneficial mutations.
Why do scientists believe in natural selection?
Scientists believe in natural selection because it is a well-supported and extensively studied mechanism that explains how species evolve and adapt to their environment over time. The evidence for natural selection comes from various fields of study, including genetics, paleontology, and ecology, providing a strong foundation for understanding the diversity of life on Earth. Additionally, the observations of natural selection in action, such as antibiotic resistance in bacteria or beak size in finches, further support its validity as a key driver of evolution.
What are advantages of variation?
Advantage- On the species level, variation allows a population to maintain a healthy diversity, allowing it to cope with changing circumstances.Disadvantage- On the individual level, variation may lead to detrimental changes as well as neutral and beneficial changes.
Which does natural Which does natural selection affect?
natural selection is basiclly only the strong survive which means it effects the weak by killing them but bernifits the strong
How does environmental pressure affect natural selection?
When nothing happens to exert strong population pressure on that population, natural selection favors the allele frequency already present. When mutations cause new traits, natural selection weeds these traits out because they're not as efficient as the others.
How natural selection takes place?
simply put, only the strong will survive
What kind of selections occurs in many birds when males that build strong nests help care for young are chosen by females as mates?
This is called, sexual selection.
What are five strong points on evolution?
Darwinism Religious Execution Natural Selection Atheism Richard Dawkins
The weak died and the strong survives?
Also known as Darwins theory of Natural Selection, as in survival of the fittest.
Is natural selection fast or slow process?
Evolution is the observed effect of natural selection acting on reproductive variation. Natural selection is a continuous process. The rate at which natural selection changes allele frequencies depends on the effect of the allele in the world. If the allele considered provides a significant reproductive benefit when compared to rival alleles, it will spread throughout the population gene pool much faster than the rival alleles.
Good things about a zombie invasion?
Natural selection. Only the strong, and smart would survive... or the very very lucky.
Is natural selection a fact or theory?
Natural selection is a scientific theory proposed by Charles Darwin to explain how species evolve over time. It is based on strong evidence from observations and experiments, making it widely accepted as a fundamental mechanism of evolution.
Does natural selection favor the strong why or why not?
Right from the start, the terms "strong" and "favors" should be defined. Natural selection "favors" simply in that the mechanism allows the continuation of those who are better suited to their environment. "Strong" and "fittest" are synonymous in this regard, because it's not referring to physical strength. Natural selection only favors those who are able to survive long enough to reproduce and thus pass on their genes. That's all there really sis to it.
When a population undergoes strong selection what happens to it?
When a population undergoes strong selection, individuals with advantageous traits are more likely to survive and reproduce, leading to an increase in the frequency of those traits within the population. This can result in rapid evolutionary changes as the population adapts to its environment.
What does natural selection act upon?
Natural Selection is driven by random mutations and sexual reproduction. Organisms produce more offspring than can survive. These offspring compete for resources for food and water and who can aviod stuff such as predators and disease. Sexual Reproduction allows a population to have variation. If all of a population was the same, then it could easily die out if it had a adaptation that decreased its chance of survival. With sexual reproduction, all of a population has some sort of variation. Random Mutations allow organisms to gain new adaptions to help them survive in their environment. Together, Random mutations and sexual reproduction allow organisms that can survive in their environment survive and pass on their genes to their offspring.
