Germ-line quandary
نویسندگان
چکیده
منابع مشابه
Germ Line Sex Determination
Zygotically contributed ovo gene product is required for the survival of female germ cells in Drosophila melanogaster. Trans-allelic combinations of weak and dominant ovo mutations (ovoD) result in viable germ cells that appear to be partially transformed from female to male sexual identity. The O V O ” ~ mutation is partially suppressed by many Sex-lethal alleles that affect the soma, while th...
متن کاملIntroduction to the germ line.
Copyright: © 2005 E. Jane Albert Hubbard and David Greenstein. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. To whom correspondence should be addressed. E-mail: [email protected] Introduction to the germ ...
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In C. elegans, the germ line is set apart from the soma early in embryogenesis. Several important themes have emerged in specifying and guiding the development of the nascent germ line. At early stages, the germline blastomeres are maintained in a transcriptionally silent state by the transcriptional repressor PIE-1. When this silencing is lifted, it is postulated that correct patterns of germl...
متن کاملGerm line development in fishes.
Classical work on germ cells in fishes has dealt with three main issues; their embryonic origin, the proliferation, and migration pathway during embryonic and larval development. Until recently, primordial germ cells (PGCs) have been studied in a number of fishes using morphological criteria only. The identification of the Drosophila vasa homolog gene of zebrafish now allows comparison of these...
متن کاملQuandary of migrated IUCD
Intra Uterine Contraception Device (IUCD) is the most widely used method of reversible contraception. However complications are known to occur with IUCD. Although uterine perforation is not very rare, but asymptomatic migration into urinary bladder and mesoappendix, is a very rare occurrence. We hereby report two such cases. Two cases of migrated IUCD into urinary bladder and mesoappendix is de...
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ژورنال
عنوان ژورنال: Nature
سال: 1988
ISSN: 0028-0836,1476-4687
DOI: 10.1038/332010c0