SEX-LINKED RECESSIVE LETHALS IN DROSOPHILA WHOSE EXPRESSION IS SUPPRESSED BY THE Y CHROMOSOME
نویسندگان
چکیده
منابع مشابه
Prenatal sex determination in suspicious cases of X-linked recessive diseases by the amelogenin gene
Objective(s):To determine the fetal discernment in suspected cases of sex linked recessive disease in the first trimester of pregnancy. Materials and Methods: After collection of 100 Chorionic Villi samples, the DNAs were extracted and baby gender was determined. Meanwhile, after increasing the sensitivity, the system was able to detect the sex of each cell which was obtained by biopsy. Resul...
متن کاملThe frequency-dose relation of x-ray-induced y-suppressed lethals in Drosophila.
E A R L Y in radiation genetic investigations it was reported that X-ray-induced sex-linked recessive lethals were not homogeneous in composition. Instead they included: ( 1 ) apparent intragenic changes without observable cytological abnormalities (point mutations) ; (2) deficiencies; and (3) changes associated with and, for the most part, inseparable from chromosome rearrangements (OLIVER 193...
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ORK on recessive lethal mutation in Drosophila sperm has suggested ways win which chromosome breakage may be related to recessive lethal mutation, through position effect, deficiency, and as a direct result of breakage. The increase in aged oocytes of radiation-induced dominant lethals (PARKER 1959) and of rearrangement, the slower rejoining of breaks (PARKER and HAMMOND 1958) , and the higher ...
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HE spontaneous mutation rates for autosomal lethals (both second and third chromosomes) in both male and female Drosophila melanogaster were reported in an earlier study (WALLACE 1968). Nearly 12.000 gametes obtained from lethal-free individuals were tested; the proportion of lethal-bearing ones was approximately 0.006 for either autosome and for either sex. The finding that the mutation rates ...
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84 per cent albite and we know enough of relations in our general system (Fig. 1) to be able to say that the conditions are similar in mixtures with an excess of silica (simplified fayalite-rhyolites) and also in those with a deficiency of silica (simplified fayalite-phonolites). While we have made only a first step in the investigation of these extreme liquids it is plain from the results of t...
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ژورنال
عنوان ژورنال: Genetics
سال: 1960
ISSN: 1943-2631
DOI: 10.1093/genetics/45.12.1649