Comparison Of Scupin And Decorse's Theory Of Natural Selection

He started off by traveling to different countries to study animals, their behaviour as well as humans. His contemporaries didn’t agree with the theories he made. Hence when he made the different conclusions about human’s origin. He claimed that humans originated from apes and that they are made in the of God. They found this hard to believe and therefore they didn’t agree with him. What led to their disagreement was the fact that he couldn’t proof his theory. He also studied animals and their behaviour and he couldn’t understand why they act in certain ways and did certain things. He also noticed that they don’t just behave differently but also look differently for instance when he studied and collected birds and noticed that their beaks

During the natural selection process the traits that will decrease the reproductive success get eliminated, while those traits that enhances the ability to reproductive become more widespread. The natural selection doesn’t explain all genetic variation even though it has favoured certain traits in the human population. “The non-random distribution of neutral traits of illustrates genetic drift” (Scupin and DeCorse 2015). Genetic drift is known as the process of selection that alters allele frequencies. It is also useful when it comes to explaining differences among genetically isolated populations. Gene flow is unlikely for those geographically distant people. Scupin and DeCorse (2015;122) the the “introduction of new genes into a population’s gene pool through inbreeding with another population”. The rule of endogamy furthers restricting gene flow.
The physical environment influences human variation by either promoting or restricting growth and development. The physical differences among humans are seen as a result of how well the requirements for growth are met. Studies has proven that humans are highly sensitive to changes in their physical

These innovations are reflected in array of different stone tool traditions, whereas the lower and middle Paleolithic can be described in terms of a few too industries and characteristic tools, Upper Paleolithic industries are presented by a myriad of different local styles and tool kits.
Archaeologists divide the Upper Paleolithic period into the stone industries, with each encompassing tremendous variation in stone tool types. Stone tool production made a major technological advance with increasingly fine techniques for producing blades . Among the most striking examples of Upper Paleolithic percussion flaking are solitarian projectile points, dated to 20, 000 years ago. Upper Paleolithic sites have produced bone needles for sewing clothing, fiber for making rope, evidence of nets and trapping equipment. This period is also distinguished by the increasing evidence for composite tools, implements fashioned from several