Our References

We got are imformation at www.lifehack.org,http://ghr.nlm.nih.gov, And from Mr. Schubert

Our Conclusion

-From our research we found that the difference of climates and the different nutrients determined how the organisms in the area adapted as well determined their rate of lactose intolerance. This adaption has to do with two factors, Epigenetics and Natural Selection.

-Epigenetics is the study of the development and maintenance of an organism that is determined by a set of chemical reactions that switch parts of the genome off and on at strategic times and locations.

-Most of everyone is born with the enzyme lactase and is able to break down the nutrient lactose, mammals are coded genetically to live off of their mothers milk. Yet, many people over time become lactose intolerant. This change has to do with Epigenetics.

-How Epigenetics effects lactose intolerance

-In different cultures different necessary needs where mimicked (such as lactose tolerance) so instead of the enzyme lactase being simply “switched off” after infancy, it stays on and keeps producing lactase. The opposite action is taken in environments that do not lack in plant based nutrients.

-How natural selection effects lactose intolerance

-Natural selection is the gradual, non-random process by which biological traits become either more or less common in a area. This is also exemplified in the evolution of lactose intolerance. Over time, the organisms in specific areas such as Finland found it necessary to survive in the winter months if they could consume animal based nutrients such as milk due to the cold weather. The organisms that could not break down the nutrient either died off or did not reproduce due to mal nutrition, so this lactose intolerant genetic

 

Our Materials

All we need is a computer paper and pencils.
 

(R)Evolution Of Theory

The theory of evolution is one of the great intellectual revolutions of human history, drastically changing our perception of the world and of our place in it. Charles Darwin put forth a coherent theory of evolution and amassed a great body of evidence in support of this theory. In Darwin's time, most scientists fully believed that each organism and each adaptation was the work of the creator. Linneaus established the system of biological classification that we use today, and did so in the spirit of cataloguing God's creations. .

In other words, all of the similarities and dissimilarities among groups of organisms that are the result of the branching process creating the great tree of life.

Our Time Line

How will we study this?

We will study this by doing online research as well as some in class labs provided by Mr. Wieseth

One Hypothesis:

We think that the reason some races have a higher percentage of lactose intolerance is because some people drink more milk due to their cultural foods. For instance white Americans maybe have a lower percentage of lactose intolerance because a lot of the native foods include cheeses, and a lot of items with milk, as compared to Asians who have a high percentage of lactose intolerance because many of the natives foods do not include milk, so they are not accustomed to eating it.