Week 3 Analogy/Homology Post

Week Three: Analogy/Homology Post

HOMOLOGOUS:


In comparing two species such as the human and chimpanzee, you come to find a homologous trait. The tailbone of a human being and the tail of a monkey are great examples, in my opinion. The tailbone is actually called the tailbone because of this shared lineage. Because a human doesn’t actually have a tail but the tailbone is the last vestige or remains of where a tail would be, it is referred to as “vestigial.” Humans used to have a tail, but eventually evolved out of it, leaving behind the reminisce of simply the tailbone, whereas chimpanzees still carry that trait, as well as the tailbone. Humans and chimpanzees, two very closely related species, share a common ape-like ancestor that of which lived on Earth millions of years ago.
 
Above is a photograph of a human tailbone.
 
Above is a photograph of a chimpanzee's tailbone. 
  
ANALOGOUS:


In comparing two different species such as, a human Eye and an Octopus Eye we find analogous traits.  Both a human and octopus share not only different diets but also different environments. The octopus and the human are not closely related, whatsoever, yet the eye of a human is very similar in structure to the eye of the octopus. In fact, the octopus eye is superior to the human eye in that it does not have a "blind spot". Both eyes are round and have the same structural traits. Both have an eyelid, cornea, retina, pupil, iris, lens, and optic nerve. The human eye and octopus eye are used to hunt for prey in two completely different environments. Being underwater the octopus must be able to see in the dark, while the humans must be able to see in bright habitats.  This can be the reason why both species developed an eye to help advance its survival in habitats they live in. I would presume that millions of year ago they shared a common ancestor between the octopus and human had analogous traits. The species had to of, because when the ancestral organisms split and down the path of evolving into each species and giving them the ability to develop eyeballs evolved into every species following to also develop eyeballs, regardless of their function, location, or lifestyle.

Protein Synthesis DNA Week 2 Blog

DNA:  
A G G G T A C C A A G G G A A C G G C G G A C G G C C A T T G A T C G C G G

Week One Blog Post

1. I chose to write about Jean Baptiste Lamarck, who had a very different view of evolution than Darwin's. Lamarck's view was eventually proven wrong, making his effect an extremely negative one, and due to what his views were, he is the furthest from what we agree with today, causing him to be the most negative influence of the listed people to choose from. His views were completely rejected when Darwin proposed the idea of Natural Selection. Lamarck believes that species did not die out after extinction, they simply became a new species. 
2. Lamarck believed that simple life forms contineue to come into existence through dead matter and gradually became more and more thorough and "perfect" as they changed from species to species. http://www.pbs.org/wgbh/evolution/library/02/3/l_023_01.html
3. The bullet point "If the environment changes, the traits that are helpful or adaptive to that environment will be different." Lamarck believed that their different behavior would be noticed by their organs and then the changes will be passed down to their offspring, which is incorrect according to Darwin who believes that instead of the offspring being given the traits, there are different types of that animal and the selected one that adapt better to their surroundings will live, making it look like they are they offspring, but when really, the other animal that didn't evolve simply died off.
4. I completely believe that Darwin could have developed his theory of Natural Selection without Lamarck, because Lamarck's idea of evolution is completely different from hat of Darwin's. And if Lamarck's view did help Darwin, it was in a way that of which he can test and see as falsifiable and then continue moving forward to find the correct answer.
5. The attitude of the Church affected Darwin's publication on The Origin of Species because many do not understand that religion and evolution is not one or the other. They have absolutely no tie with one another, they argued the book refutable due to its conflict with religion and faith. They pushed Darwin back on publishing the book because at the time if Science did not tie with Religion is was unworthy.