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Pachytene chromosomes in male and female mice heterozygous for the Is(7;1)40H insertion


, : Pachytene chromosomes in male and female mice heterozygous for the Is(7;1)40H insertion. Chromosoma 90(3): 163-169

Pairing of pachytene chromosomes was studied in oocytes and spermatocytes of mice heterozygous for the male-sterile Is(7;1)40H insertion using light and electron microscopy for synaptonemal complex analysis in surface-spread, silver-stained preparations. The data comprised four males and four female embryos. The insertion/deletion configurations appeared as either two bivalents or one quadrivalent in both sexes, but the proportion of bivalents was higher in oocytes. Some insertion and deletion bivalents showed synaptic adjustment. The insertion/deletion configurations were associated with, or adjacent to, the XY bivalent in the majority of spermatocytes. End-to-end association of different bivalents was more frequent in oocytes than in spermatocytes. It is suggested that physiological differences between male and female gametocytes may lead to the difference in their reproductive potential.

US$29.90

PMID: 6094122


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Sasano, H.; Rojas, M.; Silverberg, S.G., 1989: Analysis of lectin binding in benign and malignant thyroid nodules. The lectin binding properties of ten cases each of adenomatoid nodule, follicular adenoma, and papillary carcinoma and five cases of microinvasive follicular carcinoma were examined histochemically and compared with adjacent normal thyroid tissue....

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