Australian Jack Irishâex-lawyer and sometime debt collector, cabinetmaker and barflyâgets a double introduction as MacAdam/Cage releases his first two adventures (number two is Black Tide) this month.
But ever since then, the estimated number has been steadily shrinking. A new study suggests that the human genome could contain as few as 19,000 protein-coding genes, fewer than nematode worms. In 2001, the initial sequence of the human genome cut the figure dramatically.
A gene is a segment of DNA that codes for a polypeptide or for a molecule of RNA, such as a transfer RNA (tRNA) or ribosomal RNA (rRNA). The genes in the nucleus are in chromosomes. A chromosome consists of a molecule of DNA (two after replication of the DNA) and associated proteins. Genes are segments of DNA molecules.