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The Xenopus mid-blastula transition (MBT) marks the onset of large-scale zygotic transcription, as well as an increase in cell cycle length and a loss of synchronous cell divisions. Little is known about what triggers the activation of transcription or how newly expressed genes interact with each ot...
ORGANISM(S): Xenopus (Silurana) tropicalis 
The zebrafish u-boot (ubo) gene encodes the transcription factor Prdm1, which is essential for the specification of the primary slow twitch muscle fibres that derive from adaxial cells. Here we show that Prdm1 executes this function by acting as a transcriptional repressor. Expression of the slow tw...
ORGANISM(S): Danio rerio 
To compensate for the increased dosage of X chromosomes in females one of the two X chromosomes is inactivated in eutherian mammals in an Xist-dependent manner. Xist is, however, not found in metatherians. Here we describe long non-coding RNA Rsx (RNA-on-the-silent X) that exhibits properties consis...
ORGANISM(S): Monodelphis domestica 
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