AN X-RAY ANALYSIS OF CHROMOSOME DUPLICATION
نویسندگان
چکیده
منابع مشابه
CHROMOSOME STRUCTURE X. AN X-RAY EXPERIMENTt
T WAS recently found (NEBEL and RUTTLE, in press) that Tradescantia I reflexa Raf. shows four threads1 per chromosome during all somatic as well as during all premeiotic stages. Multiplication of threads occurs a t metaphase during somatic division (fig. I). In meiosis of T . reflexa the four threads multiply a t early interkinesis and do not do so again until the metaphase of the first pollen ...
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15 صفحه اولInherited partial X chromosome duplication in a mentally retarded male.
A mentally retarded male patient with a structurally abnormal X chromosome is reported (karyotype 46, dir dup (X)(p11.2 leads to p21.2)Y). In the normal mother a similar X chromosome duplication was found, which was preferentially inactivated. Xg blood groups were studied in the family. The findings indicated that recombination took place at maternal meiosis, as both karyotypically normal sons ...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1955
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.41.3.150