Taming the genome`s `jumping` sequences
(PHYSorg.com Biology)

The human genome is fascinating. Once predicted to contain about a hundred thousand protein-coding genes, it now seems that the number is closer to twenty thousand, and maybe less. And although our genome is made up of about three billion units-base pairs-many of them don`t seem to belong to specific genes, and for that reason they were delegated to the dustbin of genetics: they were literally called `junk DNA`.