Almost everything that is alike has the same DNA …
DNA sequencing is done by scientists in a very precise manner. First the DNA must be extracted from the chromosome that houses it, and then broken up into smaller strands. Each small strand is used to make a set of fragments, each one base (two opposing nucleotides in a strand) shorter than the one before it. The fragments are separated by a gel and then a fluorescent dye is used to identify each individual type of nucleotide. A computer program then generates the sequences of the nucleotides into units of about 500 bases that exactly replicate the strand that the DNA was taken from. These units are then replicated to make a very long strand of DNA sequencing. The resulting DNA sequencing is then shared with other scientists in computer databases. Patrica Stevens owns and operates http://www.dna-sequences.com Dna Sequence
Last modified August 8, 2008Author 2462 > has blogged 23 times
