The theory of evolution, developed by Charles Darwin, has been a controversial issue for hundreds of years (John Donovan, 2009). In the absence of evolution, modern medicine and public health developments would not be possible because the world would have a ton of facts with no connections between them leaving the world vastly diverse and randomly disconnected (Donovan, 2009).
The theory of evolution is based on the premise that all forms of life are related through the sharing of a common ancestry (Donovan, 2009). Claim is made that apes and human share a common ancestry because of the similarities in the skeletal make-up of the two (Donovan, 2009). Additionally, claim is made that a chimpanzee also shares ancestry with apes and 96-98% of human genes are similar to a chimpanzees genes (Donovan, 2009). This leads evolutionists to believe that humans, chimpanzees and apes all share ancestry with other large primates in history (Donovan, 2009).
Charales Darwqin used the idea of homology to explain the close relations between species (Donovan, 2009). He explained that the more anatomical and genetic similarities between species meant that the species were more closely related than others (Donovan, 2009). For instance, a human and ape have definite similarities in skeletal structure giving them a related ancestry (Donovan, 2009). Moreover, there is also a definite distinction in the facial expressions and ability of faqcial movement linking them even closer in ancestry (Donovan, 2009).
The theory of evolution by natural selection is the idea that evolution resembles branching in that behavior is a replication of genomes that will survive in a certain environment or will survive long enough to replicate genetic material (Bridgeford, 2009). Throughout the process of replication, genes evolve or adapt to be able to survive and environment (Bridgeford, 2009). Darwin basis his theory off four ideologies:
- Each generation of individuals are produced in increasing numbers that can survive an evolving environment (Donovan, 2009).
- Variations in genetics exist among species which are heritable to compensate for evolving environments (Donovan, 2009).
- Indivuals with heritable traits that have genetically evolved are better adapted to survive in a new environment (Bridgeford, 2009)
- When a species can no longer breed successfully with the same species, a new species has evolved within the same ancestr (Bridgeford, 2009).
Evolution provides deep explanation on how so many species exist and why there are these variations in individuals, as a matter of fact, it is found that 98% of human genes are actually bacterias that assist in human survival in environments (Donovan, 2009).
Bridgford, N. (2009). Darwin’s theory of evolution. Young Scientists Journal, 2(7), 48-50. Retrieved from http://search.proquest.com/docview/870490482?accountid=458
John Donovan For, T. R. (2009, Feb 08). THE EVOLUTION OF DARWIN’S THEORY. The Register – Guard Retrieved from http://search.proquest.com/docview/377829581?accountid=458