Chromosome 18 - Junk DNA, or is it? скачать в хорошем качестве

Chromosome 18 - Junk DNA, or is it?

EXPLORE THE RI ADVENT CALENDAR: http://rigb.org.uk/advent Of all our chromosomes, chromosome 18 is the least dense in terms of genes, with barely any of its rather paltry 76 million base pairs encoding actual genes. As with the rest of the human genome, a large portion of it is considered "junk DNA", so called because it doesn't appear to have any particular function. There might just be a reason, however, that these seemingly pointless sequences of DNA have stuck around after billions of years of evolution. As Dr Adam Rutherford explains, what we currently perceive as junk could turn out to have a hidden purpose, which is why it's so important to keep sequencing more and more peoples' genomes. With thanks to BBSRC: http://bbsrc.ac.uk/ Don't miss the 2013 CHRISTMAS LECTURES on BBC Four and BBC iPlayer: http://rigb.org/christmas-lectures The Ri is on Twitter:   / ri_science   and Facebook:   / royalinstitution   and Tumblr:   / ri-science   Our editorial policy: http://www.rigb.org/home/editorial-po... Subscribe for the latest science videos: http://bit.ly/RiNewsletter