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Four Forces of Evolution - Essay Example

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Evolution is a process that contains four forces and these four forces include: genetic drift, natural selection, gene flow and mutation (Fogiel 908). Mutation being one of the forces of evolution takes place when changes in DNA or De-ox ribonucleic sequence of a certain genome…
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Four Forces of Evolution
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Download file to see previous pages Another force that results in evolution is gene drift and it is a result of alterations in the frequency of genes in a particular population. It is even recognized as allelic drift, this is because it even includes alteration in frequency of allele in a certain population as result of sampling that is random in nature. The force of genetic drift may result in the disappearance of allele and this may take place due to reduction in genetic variations. Offspring Alleles and Parent’s alleles may be similar to each other.
The third force of evolution is gene flow which refers to the movement of genes from one specific population to another population. The process of this transfer is even regarded as migration of genes. The existence and absence of gene flow can alter the course of entire evolution. Gene flow may result in the introduction of variants of genes and characteristics that may negatively impact a particular population. Due to this, a population’s organisms may develop devices in order to conduct prevention of mating with species that may be distant genetically. If this process takes place it may occur in the development of new species and gene flow can even effect variations in one particular population or variation between different populations. Natural selection refers to the concept that states that genetic mutations that result in enhancement of reproduction should remain familiar in different generations of a population. The concept of survival of the fittest states that individuals who have the ability to reproduce along with survival should remain and should be responsible for the determination of quantity of contribution that is genetic in nature in succeeding generations. Variation can take place if natural selection occurs in genes and individual species. The term isolation mechanism is used to refer to a particular trait including ...Download file to see next pagesRead More
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