نتایج جستجو برای: gametogenesis
تعداد نتایج: 1479 فیلتر نتایج به سال:
Angiosperms do not contain a distinct germline, but rather develop gametes from gametophyte initials that undergo cell division. These gametes contain cells that give rise to an endosperm and the embryo. DNA methylation is decreased in the vegetative nucleus (VN) and central cell nuclei (CCN) resulting in expression of transposable elements (TEs). It is thought that the siRNAs produced in respo...
In vitro gametogenesis raises new possibilities for reproductive and regenerative medicine as well as vexing policy challenges.
Eukaryotic organisms age, yet detrimental age-associated traits are not passed on to progeny. How life span is reset from one generation to the next is not known. We show that in budding yeast resetting of life span occurs during gametogenesis. Gametes (spores) generated by aged cells show the same replicative potential as gametes generated by young cells. Age-associated damage is no longer det...
AUTHOR SUMMARY Germ cells are the only cells that can transfer genetic materials to the next generation via the sperm or egg. However, recent analyses in teleosts revealed another essential role of germ cells: feminizing the gonads. In our study, medaka mutants in which gametogenesis was blocked at specific stages provides the novel view that the feminizing effect of germ cells occurs in parall...
Palindromes are two groups of identical sequences which join each other in inverted direction. The palindrome mediated genomic instability contributes to a diverse group of genomic rearrangements like translocations, deletions, and amplifications. Palindrome involve in translocation have AT richness (PATRRs) and the best suited examples of this is t(11;22) translocation. PATRR22 is a hotspot of...
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