Y map: The array of genes on the Y chromosome.
Once thought to be a genetic wasteland, the Y now is known to contain at least 20 genes. Some of these genes are unique to the Y including the Y-chromosome sex-determining region and male fitness genes that are active only in the testis and are thought responsible for the formation of sperm. Other genes on the Y have counterparts on the X chromosome, are active in many body tissues and play crucial "housekeeping" roles within the cell.
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Young Male and Female Achievement Program (Y-MAP) has been serving thousands of young men and women since 1999, originating in the Oxon Hill, Maryland area.
phone: 301 868 BOYS (2697) toll free: 888 919 BOYS (2697) toll free fax: 888 482 0098 email: email@example.com
Yale Egyptology is dedicated to the study and exploration of the civilizations, languages, and history of the Nile Valley and its desert hinterlands, from prehistory to ...