JW-+DNA+notes

DNA Basics: - the human genome consists of 3 billion base pairs of DNA, composed of 23 pairs of chromosomes - DNA is a nucleic acid- molecules containing information - DNA is found in the nucleus of eukaryotic cells - DNA is made up of four bases and a backbone - Back bone is made up of sugar and phosphate - Hydrogen bonds are easily broken apart - DNA replication occurs during cell division - DNA turns into RNA, rewritten into RNA - DNA is the blueprint for making other things in the body

DNA Probe: - it is used to locate a particular sequence of DNA base pairs - DNA profiling - a sequence of DNA that you need to find to pair up with each other - polymorphic- DNA that is specific to each person

Electrophoresis: - mapping the order of restriction fragments in chromosomes - to determine the nucleotide sequence of a piece of DNA - biggest is on the top of the gel - results are seen with a UV light - separated by size - electric current runs the DNA down the gel