Monday, October 22, 2007

Jessica Eddy October 22, 2007 3/3

Class Review:

- Handed in late Bio Field Projects.
- Marked homework.
- Learned about embryos, homologous and analogous features, vestigial features and similarities/differences in DNA.
- Did Analysis assignment.
- Went through and took notes on "Early Beliefs about Evolution" handout.

Thoughts and Opinions:

Its crazy to think that all of the evidence that we base our evolution and scientific history on is as much as we could fit in the back of a pickup truck. I had never thought of it that way and it amazed me. Its interesting how closely related some species are to others. For example, the T-Rex and the chicken. It was hard to picture that image in my head. Overall, it was an interesting class and I learned a lot of new information. I'm just wondering, what species humans are the closest to?

Additional Insight

http://www.amnh.org/exhibitions/permanent/humanorigins/past/dna.php

The chimpanzee and another ape, the bonobo, are humans' closest living relatives. These three species look alike in many ways, both in body and behavior. But for a clear understanding of how closely they are related, scientists compare their DNA, an essential molecule that's the instruction manual for building each species. Humans and chimps share a surprising 98.8 percent of their DNA.


The light and dark bands on these chromosomes, created by a laboratory dye, reveal similarities and differences among human, chimp and mouse DNA.

1 comment:

Biology 20 Student said...

Well done, Jessica.
It's neat to look at the chromosomes physically for comparison.
3/3 Mr.C