Life with 6000 genes.
نویسندگان
چکیده
The genome of the yeast Saccharomyces cerevisiae has been completely sequenced through a worldwide collaboration. The sequence of 12,068 kilobases defines 5885 potential protein-encoding genes, approximately 140 genes specifying ribosomal RNA, 40 genes for small nuclear RNA molecules, and 275 transfer RNA genes. In addition, the complete sequence provides information about the higher order organization of yeast's 16 chromosomes and allows some insight into their evolutionary history. The genome shows a considerable amount of apparent genetic redundancy, and one of the major problems to be tackled during the next stage of the yeast genome project is to elucidate the biological functions of all of these genes.
منابع مشابه
Essay 2
Yet there are also basic differences between these cell types, in addition to the defining existence of a nucleus in eukaryotes. These stem mainly from genome size. Prokaryotes have significantly smaller genomes than eukaryotes; usually consisting of 1000 to 6000 genes with minimal amounts of regulatory sequences in between. Conversely, human (eukaryotic) cells consist of around 24,000 genes an...
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ورودعنوان ژورنال:
- Science
دوره 274 5287 شماره
صفحات -
تاریخ انتشار 1996