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A chromosome survey carried out on 233 adult male patients at a mental subnormality hospital is described. Five patients with an additional Y chromosome and six with autosome abnormalities were identified. The prevalence of patients with a detectable chromosome abnormality was 4.7%, whereas that...
Identification of D group chromosomes was done by quinacrine mustard staining and fluorescence microscopy, as well as by 3H–thymidine labeling and autoradiography. No special instruments were used for the fluorescence microscopy studies. Chromosome 13 was recognized easily by fluorescence...
An extensive family with a total of forty–one individuals who are either affected or reputed to be affected with hereditary hypoplasia of the enamel is presented. The distribution of patients, which spans four generations in this pedigree, appears to be consistent with X–linked dominant...
In 70 apparently healthy volunteers serum intestinal alkaline phosphatase activity was unrelated to both the fasting serum triglyceride concentration and the degree of rise of serum triglyceride level after a standard fatty meal. In addition no association was found between ABO blood group,...
The inheritance of Alport's disease, hereditary nephropathy with deafness, has been re–examined using data from a large French–Canadian kindred and reports from the literature. Sibships in wliich a parent and grandparent were known to carry the gene were used to test for partial...
Sex determination in man and other mammals can be accounted for in terms of three postulates. First, that unless specifically inhibited, the differentiation of the primary gonads goes in the male direction. Second, that the specific inhibiting factor is produced by a structural gene probably...
Treatment of standard human chromosomal preparations with NaOH and standard saline–citrate demonstrated constitutive heterochromatin. It is localized near the centromere or within the centromeric region in all except the Y chromosome. The technique was used for identification of G and Y...
Gm(a) (x) (g) (f) (b1) were examined in 84 random Norwegian families with 444 children allowing direct estimates of the f,b, a,g, ax,g, and a,b (including a,b0b1, a,b0st, and f,b0b1) gene complex frequencies and an upper estimate of the f,g frequency. Phcnotype and mating type patterns were...
A report is given on a patient with oligospermia who has a large Y chromosome with two fluorescent bands. It is suggested that the bipartite structure is the result of unequal sister–chromatid exchange.
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