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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.
What is the only evolutionary mechanism that consistently leads to adaptive evolution?
Natural selection is the only evolutionary mechanism that consistently leads to adaptive evolution. It works by favoring individuals with advantageous traits that help them survive and reproduce in a given environment, leading to the increase in frequency of those traits in a population over time.
What happens to unnecessary traits during the process of natural selection?
How does natural selection affect undesirable traits?
How do mutations relate to natural selection?
Mutation, a copying error in the replication of DNA, can give rise to variation in an organisms phenotype and if this new phenotype is beneficial to survival and reproductive success ( as little as 1% ) it will be selected naturally against the immediate environment, then if this so selected organism leave many descendents with the same beneficial traits then the populations gene pool will change in allele frequency and you have evolution. ( a 19th century sentence Darwin would be proud of! )
Evolution by natural selection may disappear in homo sapiens but may be replaced with evolution by human intervention?
It means scientist using clone technology to breed a super-human, as it may be called. Humans have intervened in the natural selection of the species by using medical means to prolong life and to allow people to procreate when they could not have done so naturally. (This only affects the natural selection of the species when it affects whether or not a person can procreate, so medical intervention that prolongs life well after the age of being able to procreate is unlikely to have an effect on natural selection, unless it allows procreation with aged and therefore less healthy sperm or eggs.) This will eventually have an effect on the species by increasing the likelihood of heritable traits being passed on that are not to the benefit of the species. Evolution by human intervention would require that the intervention changes the set of people able to procreate. In vitro fertilisation would be one means by which this occurs if the difficulty with conceiving is a heritable one. The abortion of foetuses of the less desired sex, or bearing undesired traits or diseases is another.
Was Charles Darwin contribution natural science?
Charles Darwin gave the theory of evolution. He he examined earthworms and their effect on soil, he examined human evolution and sexual selection.
How does natural variation affect evolution?
Natural selection (the driving force of evolution) is the selection of genetic variations by how they effect the organism's chances of survival or reproduction. If they diminish it's chances, the organism or it's immediate offspring die and the gene is gone. If the genetic variations increase it's chances, then it survives. Without genetic variations there can be no evolution. Natural selection is the selection (by environmental pressures) of those variations.
What is one effect of natural selection?
One effect of natural selection is the adaptation of populations to their environments as individuals with advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring. Over time, this process can lead to the evolution of new species better suited to their specific ecological niche.
How does nonrandom mating affect evolution?
Non-random mating is otherwise known as sexual selection. Some see this as distinct from natural selection, but I think that sexual selection is merely a form of, or perhaps more a complication of natural selection. Selection, natural or sexual, is the effect that "guides" evolution, that allows evolution to produce populations suited to their environment.
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.
What is the only evolutionary mechanism that consistently leads to adaptive evolution?
Natural selection is the only evolutionary mechanism that consistently leads to adaptive evolution. It works by favoring individuals with advantageous traits that help them survive and reproduce in a given environment, leading to the increase in frequency of those traits in a population over time.
How does adaptation effect natural selection and an organisms for survival?
Theo is the solution
What is the cause and effect of Darwin's theory?
The cause of Darwin's theory of evolution was his observations of natural variation and adaptation in species during his travels, particularly in the Galapagos Islands. The effect of his theory was a paradigm shift in biology, leading to a better understanding of how species change over time through the process of natural selection.
What happens to unnecessary traits during the process of natural selection?
How does natural selection affect undesirable traits?
A random change in a population's allele frequency?
Evolution is the change in allele frequency over time in a population of organisms. By mutation, genetic drift, gene flow and natural selection.
What effect would natural selection have on a partially evolved bat?
it would die
What role do organisms play in their evolution?
Evolution is the effect caused by the interaction of organisms and their environment, organisms and other organisms, organisms and their genes, and so on. The simplest answer to this question is that organisms produce and propagate replications of the alleles they carry: they reproduce.
