transcription

Transcription is the process of creating a complementary RNA copy of a sequence of DNA. Both RNA and DNA are nucleic acids, which use base pairs of nucleotides as a complementary language that can be converted back and forth from DNA to RNA by the action of the correct enzymes. During transcription, a DNA sequence is read by an RNA polymerase, which produces a complementary, antiparallel RNA strand. As opposed to DNA replication, transcription results in an RNA complement that includes uracil (U) in all instances where thymine (T) would have occurred in a DNA complement. Also unlike DNA replication where DNA is synthesised, transcription does not involve an RNA primer to initiate RNA synthesis.
Transcription is explained easily in 4 or 5 steps, each moving like a wave along the DNA.
Transcription is the first step leading to gene expression. The stretch of DNA transcribed into an RNA molecule is called a transcription unit and encodes at least one gene. If the gene transcribed encodes…

Video SEO Tips From Aaron Wall of SEOBook maxresdefault 360x240

Video SEO Tips From Aaron Wall of SEOBook

This is an interview with Aaron Wall, founder of SEOBook.com at Search Engine Strategies San Jose 2009. We spoke to Aaron about SEO Book as well as his use of videos to promote the site. Aaron provides some basic tips for Video SEO