Evidence for the appearance of novel gene products during amphibian blastulation.
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Implication
Laboratory analysis reveals a twentyfold surge in informational RNA synthesis in amphibian embryos, indicating broad activation of novel gene transcription during blastulation.
Key Points
- To determine the timing and magnitude of informational RNA synthesis and novel gene product emergence during early amphibian embryogenesis.
- Tracked the rate and developmental timeline of informational RNA transcription from early cleavage through the blastula stage in amphibian embryos.
- Characterized the synthesis dynamics of heterogeneously sedimenting, DNA-like RNA during mid-to-late blastulation.
- Informational RNA transcription begins during early cleavage and accelerates gradually as embryos advance into the early blastula stage.
- A near embryo-wide acceleration occurs during the mid-to-late blastula period, producing at least a 20-fold increase in the rate of heterogeneously sedimenting, DNA-like RNA synthesis.
Cite This Study
Davidson et al. (1968) studied this question.