Thursday, November 12, 2009

Diversity and Unity


"The diversity and unity of life are equally striking and meaningful aspects of the living world".
Theodosius Dobzhansky



Have Scientists Understated Genetic Diversity?

We’ve all heard that humans and chimpanzees share about 98% of our DNA. If we flip that around, then we differ by only 2%. Yet the tiniest differences can make all the difference, it turns out. Most animals and birds have the gene called FOXP2, often erroneously labeled the “language gene.” Humans and chimps both have this gene, but chimps can’t speak due to a difference of just two amino acids. Just three amino acids differentiate the human and mouse versions of FOXP2. Research is beginning to show that the tiniest change in a gene or protein can have a domino effect that triggers great differences between living things.
This brings up what seems an obvious question: Have scientists understated genetic diversity? Clearly we still have a lot to learn about what so-called genetic similarity means. If a couple of amino acids means the difference between speaking and not, perhaps a 2% genetic difference has far more significance than evolutionists would like to admit.
Check this out!




History of life through time

Life! It's everywhere on Earth; you can find living organisms from the poles to the equator, from the bottom of the sea to several miles in the air, from freezing waters to dry valleys to undersea thermal vents to groundwater thousands of feet below the Earth's surface. Over the last 3.7 billion years or so, living organisms on the Earth have diversified and adapted to almost every environment imaginable