MICB 201 Chapter Notes - Chapter 1-2: Horizontal Gene Transfer, Carl Woese, Intestinal Villus
Document Summary
Carl woese created a tree that contains all types of life (showed how they are connected in the past through common ancestors: 3 domains of life) Indicator of the genetic makeup of different organism. Determine evolutionary relationships by comparing similar regions (conserved) of ssu rrna molecules & number of differences in nucleotide sequence of variable regions (mutation) Number of line units (length?) of phylogenetic tree shows how different the organisms are i. e. the line units add up to the number of differences. Stem of rna molecule: most conserved, ds region. Prokaryotes can get genes from other sources other than parental source (horizontal gene. As long as prokaryotes have a high similarity in nucleotide sequences, they are considered the same species i. e. the nucleotide sequence does not have to be exact. Although there may be diversity within a phyla, it is mostly based on how similar ssu rrna nucleotide sequences are. Appears to be more eukaryotic species compared to prokaryotic species.
