Week 6 DQ 1 - between humans and chimpanzees have evolved...

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SCI 230 Week 6 Day 2 Assignment: DQ 1 The most detailed analysis to date of how humans differ from one another at the DNA level shows strong evidence that natural selection has shaped the recent evolution of our species, according to researchers from Cornell University, Celera Genomics and Celera Diagnostics.” (Cornell University, 2005) Scientists at Cornell University analyzed 11,624 genes. They compared how these genes varied among 39 different humans and between a chimpanzee. They used the chimpanzee because their DNA is 99% identical to a human’s. The comparisons within and between species suggest that about 9 percent of genes that show some variability within humans or differences
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Unformatted text preview: between humans and chimpanzees have evolved too rapidly to be explained simply by chance. The study suggested that natural selection was responsible for this increased rate of evolution. The team from Cornell/Celera found that genes which are involved in the immune function, sperm and egg production, sensory perception and transcription factors (Cornell University, 2005) have been affected by positive selection and they show rapid evolution within the last 5 million years, which is when humans and chimps shared a common ancestor. Resources Cornell University. (2005). . Retrieved from http://www.sciencedaily.com/releases/2005/10/051023115936.htm...
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This note was uploaded on 07/28/2011 for the course SCI 203 taught by Professor Hurst during the Spring '11 term at University of Phoenix.

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