Evolution Vs Natural Selection Essay
1859 was an important year for science, especially in the science of Biology. That year Charles Darwin displayed an evolutionary theory and explained it through ‘natural selection’. Natural selection simply means that there are variations among species that have different traits, and those traits differ by their fit to certain environmental conditions. Furthermore, some species with traits better suited to the certain environment are likely to survive, whereas, those species with traits that are not very suited to the particular environment eventually go extinct. Evolution and natural selection have a special connection between them, which is after a long period of time, results of long lasting natural selection bring evolution to animals and
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These conditions include variation among individuals, also variation is inherited by the offspring, and lastly different variants have different probability of survival in the nature. (Karanth, 2009) First of all, variation among individuals is required for natural selection because of the fact that if all individuals are similar, there will not be different traits that are better than others for particular environmental conditions. Secondly, variation needs to be inherited because if changes in trait were resulted from environmental factors, the next offspring will not inherit those changes in trait; therefore, it is crucial that variation is inherited to the offspring from parents. Last but not least, individuals must have different likelihood of survival in order to have natural selection because of the fact that if all individuals had the same likelihood of survival then survival of the fittest would not come into action. Individuals having a distinct survival possibility is crucial as the stronger one will be selected by nature, which proves the theory of ‘survival of the fittest’.
According to the Karanth’s research the unit of natural selection is the DNA, which has the gene that vary in terms of traits (Karanth, 2009). Furthermore, the gene is passed on to the
These conditions include variation among individuals, also variation is inherited by the offspring, and lastly different variants have different probability of survival in the nature. (Karanth, 2009) First of all, variation among individuals is required for natural selection because of the fact that if all individuals are similar, there will not be different traits that are better than others for particular environmental conditions. Secondly, variation needs to be inherited because if changes in trait were resulted from environmental factors, the next offspring will not inherit those changes in trait; therefore, it is crucial that variation is inherited to the offspring from parents. Last but not least, individuals must have different likelihood of survival in order to have natural selection because of the fact that if all individuals had the same likelihood of survival then survival of the fittest would not come into action. Individuals having a distinct survival possibility is crucial as the stronger one will be selected by nature, which proves the theory of ‘survival of the fittest’.
According to the Karanth’s research the unit of natural selection is the DNA, which has the gene that vary in terms of traits (Karanth, 2009). Furthermore, the gene is passed on to the