Words similar to zygotic
Example sentences for: zygotic
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These platelets must represent the earliest onset of transcription of the injected construct, possibly at the onset of zygotic gene transcription.
A number of reports have characterized constitutive expression of HSP70 and HSP90 in both immature oocytes and ovulated eggs from various species [ 32 33 34 35 36 ] . HSP70 and HSP89 are constitutively synthesized in the immature, preovulatory mouse oocyte, although the expression is not heat-inducible [ 37 ] . Levels of HSP70 mRNA decrease following oocyte maturation and ovulation [ 38 ] , and HSP70 is one of the first genes to be transcribed at the onset of zygotic gene activation in the early 2-cell mouse embryo [ 39 40 ] . Interestingly, while previous investigators did not localize HSP70 to the oolemma, they did demonstrate that the presence of anti-HSP70 antibody reduces bovine sperm-egg binding in vitro.
Even so, generalizability of results to nontwins could be hampered if twins differ systematically from nontwins on factors influencing associations between socioeconomic position and adult health, as perhaps related to maternal and zygotic characteristics relevant to risk of monozygotic or dizygotic twinning or to exposures contingent upon being a twin in utero (e.g.
Following pair-wise mating (conjugation), each exconjugant replaces its old parental MAC with a new MAC, developed from a mitotic daughter of its genotypically new zygotic nucleus (review: [ 14 ] ). The mitotic sister of the MAC precursor (anlage) is set aside as the new diploid germline MIC, which is then heterochromatically silenced; all known gene expression is from the MAC or MAC anlage [ 15 16 17 ] . Once the anlage begins differentiation, the old MAC is apoptotically destroyed [ 18 ] . The mature exconjugant resumes feeding and establishes a vegetative clone (a karyonide) propagated by binary fission, in which the MIC replicates as a typical diploid mitotic nucleus and the MAC replicates amitotically.
Our system of choice is the body patterning of the early Drosophila embryo which is established by a multi-tiered hierarchy of transcription factors [ 10 ] . Broadly distributed maternal factors trigger zygotic gap gene expression in discrete domains along the anterior-posterior axis of the embryo.
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