Evolution And Evolution: The Importance Of Evolution

Evolution is the process where a population’s frequency of specific alleles changes over a period of time and generations. Evolution results in further diversity of species and can ultimately result in speciation with the assistance of natural selection. But with the introduction of modern medicines within the last 100 years to cure disease and increase quality of life the survival rate and life expectancy of an individual at birth has increased dramatically. With increased lifespan and better survival techniques humans have developed the ability to control their environments and surpass many challenges. This imposes the question, are we still evolving biologically or in other ways such as culturally? Thus this essay with look into whether humans have finished evolving and reached its peak as a species due to medicine or if even with medicines we will continue to follow the evolutionary track. Evidence to support both sides of this argument will be obtained …show more content…
Darwin’s theory of evolution has seen populations of organisms become better adapted with their environments over a period of generations due to a change in allele frequency. A change in allele frequency occurs when organism possess alleles that allow them to be better adapted to the selection pressures of their environment thus giving them a greater chance of survival and reproducing known as natural selection. This results in these favourable genes being inherited and expressed in their offspring which allows over time for the favourable genes to have a greater frequency. Adaptation to the environment is the subsequent result of this process which could potentially produce a new species adapted to the environment if reproductive and