IT is useful at this stage of human cytogenetics to keep in mind the whole spectrum of possibilities of chromosomal behaviour. In this sense Dr. Stewart's emphasis on the possibility of ...

A nondisjunction and chromosome breakage screening system devised by Craymer and modified in our laboratory, involves an X;Y translocation with the short arm of the Y ( Y S), marked with the wild type ...

HANOVER, NH – Dartmouth researchers have determined that the fruit fly Drosophila can be used for further study about why more mistakes occur during cell division as eggs become older. In humans, such ...

IT is now well known that there is an abnormal chromosome number in mongolism in chromatin-positive Klinefelter's syndrome, and in chromatin-negative Turner's syndrome. It is also known that mongolism ...