Are The modern genetic-base theory has four factors

Are Humans Still Evolving?Anatomically modern humans, AMH or Homo Erectus, arrived out of Africa at about 200,000 million years ago, and we resemble Homo Erectus substantially. However, are we the ending version of modern humans or could we still be evolving? Humans are evolving through microevolution, which is a small gradual change in genes, and will eventually lead to macroevolution. Macroevolution is a major evolution change over a period of time. Evolution can be physical/internal changes to the body or the way we interact socially. The process that humans develop over time to survive in different environments and situations, is evolution. When thinking about evolution, much of the initial images, by non-anthropologists, are usually of humans who are more ape-like and humans gradually becoming bipedal. There is the question on whether we are still evolving or are we the finished product, but “the very notion that … we might not be evolving derives from a belief that all other life forms were merely stages on the way to the appearance of humans as the intended endpoint”(Pavelka 2002:1). Have we possibly stopped evolving because it is no longer survival of the fittest, but now the “survival of everyone”? The modern genetic-base theory has four factors that can account for evolutionary changes; “selection, mutation,drift, and mixture” (Lasker 1952:433).Natural selection is the idea that organisms that are better suited for the environment survive and breed, while others die out. Through natural selection, a species evolves through a change of characteristics that have been favored for their environment. If people die before they reproduce, then natural selection is happening. Natural selection is not as rampant now as before because instead of humans changing to adapt to the environment, we change the environment to adapt to us, through our evolving technologies and our growing populations. Evolution may not be prominent to the naked eye, however, in places where there are high populations, there is a greater chance of mutations. A mutation is a genetic change in a person’s DNA. According to Alan R. Templeton, with such an inflated population, the human race has entered an “evolutionary zone” (2014:812)  in which there is a single-step mutation in every generation (2014:812). There is an evolutionary change in smaller populations, which is genetic drift. Genetic drift may be more dominant in a small population. This change is the recurrence of different genotypes in a population, which may cause different genes in individuals to not be produced.  However, this change will only happen in subgroups that have been isolated from the larger population. Mixture, or admixture, is another trait that may be account for evolutionary changes in a population. Admixture is when previously isolated populations breed with one another. Gabriel Ward Lasker describes genetic amalgamation, as the period of time where admixture is effectively cancelling out genetic drift (1952:436).