|
-- Posted by NannaCottonFluff at 1:07 pm on Sep. 23, 2008
What has DNA and Genetics got to do with darwins theory as evidance?
-- Posted by FiercexMelon at 1:09 pm on Sep. 23, 2008
Almost everything?
-- Posted by NannaCottonFluff at 1:09 pm on Sep. 23, 2008
like what?
-- Posted by MixedDelight at 1:10 pm on Sep. 23, 2008
Darwin thinks we evolved from chimps. If our genetics are similar to that of a chimpanzee then it semi proves his point. I could mean we really did evolve. Or it could mean we're simply similar to chimps. I personally do not believe we evolved from apes.
-- Posted by FiercexMelon at 1:12 pm on Sep. 23, 2008
I'm not good at explaining scientific things so this can help: http://www.talkorigins.org/faqs/modern-synthesis.html
-- Posted by Baram at 3:24 pm on Sep. 23, 2008
We were learning about this in biology a few years ago, and we did NOT evolve from apes (if evolution is true), but apes and humans share a common ancestor. Anyway, mutations in DNA can change an organism's traits, which can affect how well the organism survives in its environment. Organisms which are better adapted to their environment live and become more common than, or replace, their ancestor, while harmful mutations make it more difficult for the organism to live.
-- Posted by obvious child at 5:55 pm on Sep. 23, 2008
Quote: from NannaCottonFluff at 10:07 am on Sep. 23, 2008
What has DNA and Genetics got to do with darwins theory as evidance?
I'll try to do this simply: Genes are made up of DNA, which is commonly referred to as a blueprint for life. Genes determine our traits. Traits, like what skin color you have, hair, eyes, the length of your arms, etc matter in how you go about your life. Some traits are better then others, for instance the ability to process more types of food. That creates an advantage. The species that has the most advantages and can adapt will be selected by natural selection and will propagate. Over time species change with their enviroments and new species arise. By tracing genes we can determine our closest relatives and when they and us split from a common ancestor. We share the vast majority of our genes with chimps, meaning that humans and chimps came from the same ancestors relatively recently (couple million years). Mankind shares relatively fewer genes with starfish, meaning our common ancestor lived hundreds of millions of years ago.
|