Anthro Info

The two species I chose to compare for homologous traits are a human and a dog. Humans stand on two legs and walk upright while dogs walk and all four of their limbs and their spine is not developed in the same way human spines are that give them the ability to walk and stand straight up and down. Humans and dogs are both part of the mammalian species and both possess the homologous trait of a tailbone. Although humans and dogs both have the tailbone trait, there is a clear difference on its function for either species. Human tailbones are immobile and do not usually extend out of their body. Dog tailbones extend out and it allows them to wag their tails. Human tailbones are called vestigial tails and it means that they are an “evolutionary leftover”. The animals ancestors of humans and dogs are believed by scientists to have tails and the reason is because animals that walked on four legs were in need of an extended tailbone to serve as a structure of balance, to brush ...

I believe Charles Lyell has the most influence over Darwin’s development in a positive way. To begin Charles Lyell theorized that geologic processes at the beginning of time were the same ones that were happening during current time. He said that there was a series of slow changes that eventually built up over time. This is how he influenced Darwin, Darwin thought that the life process was the same as Lyell’s geologic process theory. Another reason he had a positive impact on Darwin’s theory was because Lyell had a good friendship with a captain named Fitzroy was was the pilot of the HMS Beagle when Darwin was sailing to the Galapagos. Fitzroy was the one who introduced Lyell’s theories to Darwin and this led Darwin to study all of Lyell’s geologic theories. The slow changed of time Lyell theorized then became the explanation for Darwin’s evolution theory. The one bullet point that most correlates with Lyell is the one that says if the environment changes, the traits that are helpf...