home *** CD-ROM | disk | FTP | other *** search
- THE WEEK, Page 32HEALTH & SCIENCEMinimaps For Human Cells
-
-
- Scientists provide the first guides to two chromosomes
-
-
- Finding a single gene among the estimated 100,000 genes
- scattered along the 23 pairs of chromosomes in human cells is
- every bit as daunting as finding the proverbial needle in a
- haystack. But now the quest has been made simpler, at least for
- two of those chromosomes. As reported in the research journal
- Nature, investigators in Paris have published the first map to
- describe in the correct order all the most important subsections
- of the 21st chromosome -- the one that harbors genes associated
- with Down syndrome, Alzheimer's disease and other neurological
- disorders. Simultaneously, researchers in Boston published a
- similar map, in Science, for the Y chromosome, which is vital
- to male development.
-
- These achievements will help researchers decipher the
- genetic blueprint of human beings. They will not, however, by
- themselves lead to useful therapies anytime in the near future.
- Because of the complicated interplay between heredity and
- environment, knowing where a gene is located and what it looks
- like is only a first step. Years of research are still required
- to determine how and why a particular gene causes a disease and
- what treatments will be needed to cure it.
-
-
-
-
-
-
-