Week6 Draft3

The number of genes in organisms do not reveal complexity. Rice as it turns out, has more genes than humans do. Genome is a collection of genes. Humans have roughly 20,000 genes in the genome, half of which is shared with zebra fish. The similarity is even greater between chimpanzees and humans. Approximately 95% of our genes are identical with the primate, this includes insertions and deletions. The difference comes from how much of the genes are turned on and when they are turned on. Segmentation is the process by which organisms express these genes in a particular order and forms the phenotypic expression of the body parts. The way the genes are activated will play a role in the outcome of development. The differences in humans and chimpanzees partly come from the different segmentation, expression of genes when they are turned on at different times.