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Describe how natural selection is related to organic evolution?
Organic evolution is the process by which the genetic makeup of a species changes over time. There are several mechanisms by which this can happen: natural selection, genetic drift (chance), migration and mutation. So natural selection is one possible way in which evolution can take place. Most biologists agree that natural selection is the most important mechanism of evolution. This mechanism was first discovered by Charles Darwin and, independently. by Alfred Wallace.
Which is more likely to be true natural selection or evolution?
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.
Who proposed natural selection as a mechanism of evolution?
At the Linnaen Society meeting sometime in 1858 Charles Robert Darwin and Alfred Russel Wallace had both their papers presented before the Society on which they proposed the idea of natural selection as a mechanism of evolution.
What is sequential mutation?
It's a double mutation that occurs on a colony of cells (bacteria for example) that claims to have resistance to two different antibiotics or viruses. This double mutation, however, strictly happens by first developing a mutation for the first antibiotic/virus and then has an independent mutation (nothing to do with the first mutation) for the other or second antibiotic/virus.
When was the theory of natural selection developed?
The theory of natural selection was developed in the middle to late 1800's by a brilliant man by the name of Charles Darwin. Im not sure of an exact date - but his book Origin of Species was published on November 24, 1859. Of course research and speculation were made much earlier in order to come to the conclusion of his theory of Natural selection and evolution being the root of where and how life came to be and progress so diverse. Hope this helps a little...
When a mutation first occurs a different allele is formed what best describes the frequency of this allele?
When a mutation first occurs, the frequency of the new allele is very low in the population. Over time, if the allele confers a selective advantage, it may increase in frequency through natural selection.
What does the word natural selction mean?
Natural Selection is simply the process where creatures that survive and reproduce carry their traits to its offspring. First, you have to understand mutation. A mutation is simply changes in genetic material and can be caused by errors when copying genes, by radiation, or chemicals and viruses, which can give a lifeform a new trait. Animals that survive with these traits carry them to their offspring. If these traits are beneficial, it will help to encourage reproduction of offspring.
What scientist first described the processes of natural selection as a mechanism for evolution?
Both Charles Darwin and Alfred Russel Wallace independently discovered natural selection.
What are the mechanisms of evolution?
There are several mechanisms for evolution. The first (and most important) being natural selection, which plays off random mutations. Genetic drift is also another important aspect of evolution. EDIT: It depends on what you mean by "mechanism." Mutations are thought to be the mechanism that causes the change in DNA, then natural selection and Gentic drift take over. Unfortunately, mutations do not hold up and evolution is ultimately left without a mechanism. This article on mutations gives an indepth explanation http://www.answersingenesis.org/articles/wow/are-mutations-the-engine STRAIT FROM THE BIOLOGY BOOK :)
What were the first Betta fish colors before natural selection?
Brown
What are the 5 ways a population can evolve?
A population will most likely evolve when there is a small population, mutations exists, natural selection may take place, nonrandom mating occurs, and/or gene flow may occur. Sexual selection, genetic drift, Gene flow, Mutation, and natural selection are five ways a population can evolve. Sexual selection is natural selection arising through preference by one sex for certain characteristics in individuals of the other sex. Genetic drift is variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce. Gene flow is the transfer of alleles or genes from one population to another. Mutation is the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes. Natural selection is the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.
What theory did Darwin first introduce in his book?
that evolution happens by natural selection
What famous concept did Darwin name for the first time?
Evolution or natural selection.
Why do arctic animals turn white?
They don't just turn their fur white to blend in with the environment it's a mutation that causes the fur to change colour. At first only one animal has the mutation, but because it's blending with it's environmental factors it's surviving longer than others that aren't that colour it has a greater chance of breeding, so the mutation is passed on until there are many this colour. The process is called natural selection
Who introduce the theory?
Darwin introduced the modern theory of evolution by natural selection, but it was also introduced by Lamark and other earlier biologists but Darwin was first to theorize about natural selection as the mechanism.
Describe how natural selection is related to organic evolution?
Organic evolution is the process by which the genetic makeup of a species changes over time. There are several mechanisms by which this can happen: natural selection, genetic drift (chance), migration and mutation. So natural selection is one possible way in which evolution can take place. Most biologists agree that natural selection is the most important mechanism of evolution. This mechanism was first discovered by Charles Darwin and, independently. by Alfred Wallace.
Who introduced the evolution theory?
Darwin introduced the modern theory of evolution by natural selection, but it was also introduced by Lamark and other earlier biologists but Darwin was first to theorize about natural selection as the mechanism.
