Monday, February 1, 2016

Human Variation and Race

High levels of solar is an environmental stress that has a negative on the homeostasis of humans. Due to high level of solar people who live in places where the UV percent is higher are known to have more melanin, which control the pigmentation of the skin. Melanoma is one way that the sun creates skin cancer. Another harmful disease that can start from high level of solar is anemia because the sun penetrates into the skin an breaks down vitamins.

A short term adaptation that happens to the body when it starts getting hot is that sweat starts to be releases from the pores in order to lower the temperature in the body and return to homeostasis.
A faculatative adaptation that happens because of the sun rays is that people who are exposed to much higher UV rays tend to have darker skin to help the amount of sun rays the body captures. The chart above illustrates the different skin colors according to the location.
A developmental adaptation happens throughout generations due to alot of sun that with time the body develops a certain metabolism that reaches a certain temperature that is homeostasis.
Image result for cultural adaptation to the sunCultural adaptation when it comes to high solar rays is influenced by the location. People who live in hot tropical temperature wear less clothes and spend more time outside than people who live in the cold temperature.

The benefit from studying humans variation across environmental cine is that allows us to explore the possibilities of genes that are evolving. It also helps us learn more about distinguished traits that certain cultures have passed on through generations.

Race has much in the understanding of variations because every culture is different that have certain traditions that have allowed them to survive. Due to the different cultures this will allow us to compare the techniques  of different cultures that will allow us to understand the geographic and requirements of surviving every different origin of race.

Tuesday, January 26, 2016

Piltdown Hoax

1. The Piltdown Hoax was founded in the 1900's by Barkham Manor in the village of Piltdown that is southeast of England. He found a piece of skull while digging and he gave it to the local anthropologist, Charles Dawson. After research Dawson concluded that the skull was too thick to be from a human so it was from a primate. This lead him to do more research so he joined with Arthur Woodward and Father Teilhard. This research became to be the evidence of the theories of Charles Darwin. However once technology advanced the skull was retested for the fluorine test. And the test concluded that the age was much younger than claimed and their were artificial cuts on it. Eventually it was stated that the skull came from a female orangutan.
2. The human faults of this incident is ambition and lying. If it was not for the success that they wanted they would have never lied about the evidence they found. The scars founded on the skull was a shocking and embarrassing for the archaeologist.
3. The positive effects of the Piltdown Hoax is that the science community became more strict on the evidence and theory that scientist created. It also allowed them to test hypothesis and evidence to make sure the ideas were honest and valid.
4. I do not think it is possible to remove the human factor from science because due to human passion there are theories created from spectacular minds. Due to human's error making it is possible that there are many scientist eager to find the unanswered questions of nature.
5. What i learned from this historical event is that ambitious can make you blind and make errors that can have bigger effects on your reputation.

Tuesday, January 19, 2016

Analogy/ Homology Blog Post

1. The tailbone in a human and the tail of a monkey is an example of homology. The tailbone in humans is not used anymore but is still a part of our bone structure that has evolution over time. The vestigial is the remain of bones the tail would have been. On the other hand the monkey uses its tail bone as lineage and helps control the tail. The common ancestor of the humans and monkey is the ape.

2.  The butterfly and the bee have their wing to be an analogous traits These species use their wings in order to transport. However the butterlfly wings are much bigger and is a different of membranes and veins. Bee wings are smaller and made with chitin. The analogous trait is their wings it exhibits similarities between the species because
                                                   it allows them to fly as a matter of transportation. The ancestor of the butterlfy is the lepidopteran species. The ancestor of the bees come from the family Crabronidae.


Tuesday, January 12, 2016

Wednesday, January 6, 2016

Historical Influences Blog.

Jean Baptiste Lamarck was the most influential person when it comes to Darwin's development of this theory of Natural selection. Jean Lamarck was the first scientist to purpose that humans developed throughout time and evolved from lower species. This proposition allowed Darwin to begin the development of the theory of natural selection. And with the work of vestigial structures Darwin was able to gain evidence through previous work of Lamarck.

http://evolution.about.com/od/Pre-Darwin/ss/8-People-Who-Influenced-Charles-Darwin.htm#step2

From the bullet listen, Jean Lamarck affected the point "Individuals do not evolve. Populations do." Lamarck came up with the initial idea that noticed that humans were evolving throughout time which started as a basic form. Even though Darwin noticed some flaws in the development of Lamarck he was still able to develop more understanding of natural selection.

Darwin could not have been able to develop his theory without the help and research form Jean Lamarck because he invented the initial idea of natural selection. He realized that humans were developing throughout time in order to survive better, this helped Darwin branch out his ideas.

The attitude of the church affected Darwin and his book by trying to cover up the ideas of science. The church did not like that Darwin's theory was not based on any religion which they did not support. This got Darwin to be ignored by the church.

Monday, January 4, 2016

Do you believe in evolution?

The question illustrates the perceptions that people had, a challenge excepting science in a time where religion was a more dominant idea. It reveals a sense of being skeptical of evidence produced my years of study. A better way to phrase the question is by asking if  "you believe that with time animals gain experience." By gaining experience we conclude that the animal is learning how to survive for longer periods of time throughout generations.