1.     A – Two different species that possess a homologous trait are human and bats.

B – The trait that these two species share are their front limbs. However, each species use their limbs differently. The humans use theirs for picking up objects, eating, and having the sense of feel, while the bats use theirs to fly. The reason for the differences in this trait though are because differences in the environment, resulting in different functions and evolutionary selection pressures which is also called divergent evolution. 
C – Both humans and bats are in the class Mamalia, which is reason enough to suggest that they come from a common ancestor.
 

 

1.     A – Two different species that possess an analogous trait are owls and butterflies.

B – The trait these two species share are their wings. The structure for the owls wings are covered in feathers while the butterflies are in scales, each use them to fly. The main similarity is that they both have wings and use them daily to fly. 
C – If you were to go back in time you wouldn’t be able to find a common ancestor between the two because the trait is analogous and not homologous. Insects have two pairs of wings while birds have one, and insects lack bones while birds do not. Since the wings have evolved independently in each of these groups and do not show that they are closely related means that the wings trait between the two is analogous with no common ancestor. 

GCTACACATGCCAAGATCTTAAGTTAAGTACGTTGTCTCAAGGGTGAATCAT

Thomas Malthus

1.      I believe Thomas Malthus has the most influence on Charles Darwin’s theory of natural selection.

2.      The contribution Thomas Malthus made to the scientific community was mainly in his Essay on the Principle of Population where he stated that the human population will always grow faster than its resources. He talked about the struggle to survive, and with all that being said he inspired Charles Darwin to develop his theory of natural selection.

3.      The key points most affected by Malthus were: All organisms have the potential of reproducing exponentially, but resources are limited and that prevents reproducing. He explained this by saying humans will always grow faster than its resources and Darwin built upon this knowledge by stating this with all living organisms.

4.      I do not think Darwin could have developed his theory of natural selection without the ideas of Malthus or the other four individuals on that list. I say this because he was inspired by each and every one of them but he put their ideas together with his own and was able to come up with something they could not have.

5.      I believe that the attitude of the churches affected Darwin tremendously, because he was going against their beliefs and at that time he could have been looked at as an outcast and no one would have respected him if his theory ended up being wrong.

6.      The online source I used for this assignment was http://www.allaboutscience.org/malthus-faq.htm because I was not able to get into the COC Library Database.

If I was stranded on a desert island the two items that I would take with me would have to be a case of waters and and long sharp knife. I would take these two items because I would need water to stay hydrated and a knife for protection from any animals that may put me in danger.