Mendel was extremely important in the process of determining how genes are passed on through generations. There was much controversy over this, some beliefs being that genes are mixed from both parents and some that genes only come from one parent. Mendel confirmed the latter except with a twist. The genes are passed on from one parent but the genes from the other parent often appear in a much more subdued form.
Who Discovered the DNA???
James D.Watson and Francis Crick
-DNA :DFive examples of Variatiions that Occur in DNA-
1. Physical Damage to the DNA could cause variation
2. Changes in chemicals A,C,G,T replacing each other in different areas
3. Duplication of letters or Deletion of blocks of letters
4. Insertion of new letters in areas
5. Changes in pattern of the different letters
Evo-Devo? What is it?
A subsection within biology that focuses on studying the effects of changes in development of species and how it functions in evolution
WHY LACTOSE INTOLERANCE?
Perhaps many people have lactose intolerance is because their ancestors, as they were migrating, found no need to have the enzyme Lactase to help digest milk anymore. Aside from needing lactase as a child to digest mother's milk, as people grew older, they became lactose intolerant. However, many societies that focused on cow herding retained their Lactase enzyme as they grew older because their food supply came from such products that contained Lactase.
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