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  • noun

Words related to leptotene

the first stage of the prophase of meiosis

References in periodicals archive ?
However, this cell was absent in stages IV, while primary spermatocytes at the diplotene and leptotene stages were only found in stages III and IV, and in stages I and II, respectively.
In control cultures, the percentages listed in Table S3 (http:// dx.doi.org/10.14573/altex.1601253s3) of the four stages of the meiotic prophase (leptotene, zygotene, pachytene and diplotene) are of the same order of magnitude as those obtained previously (Ali et al., 2014; Geoffroy-Siraudin et al., 2010, 2012).
(46) FSH is responsible for the development and differentiation of spermatogonia through different stages namely spermatogonia, preleptotene, leptotene, early pachytene, late pachytene, and secondary spermatocytes after the attainment of puberty.
This latter cell gives rise to the primary spermatocyte, which quickly undergoes its first meiotic division and passes through 4 prophase stages, leptotene, zygotene, pachytene, and diplotene, before undergoing meiotic metaphase.
Fletcher (1977) reconstructed nuclei at four successive stages of meiosis from leptotene to pachytene, from a series of ultrathin sections, and calculated the extension of SC formation.
2-4), more intensive staining revealed overcondensation of the X chromosome from leptotene to pachytene (Fig.
The respective frequencies of the leptotene, zygotene and pachytene stages as well as the frequencies of the four substages of pachytene were evaluated.
During the leptotene stage, chromosomes begin to thicken.
Both proteins can be found on the leptotene chromosomes, whereas only RAD51 is present at the later pachytene stage (Terasawa et al., 1995).
In meiotic cells, from leptotene to diakinesis stages, the X chromosome shows positive heteropycnosis, and is usually located outside the autosomal chromatin mass (Fig.