Related Experiment Video
Updated: Jun 22, 2026
07:30
Visualizing Zygotic Genome Activation In Single Cells of Early Embryos
Published on: April 3, 2026
Before maternal-zygotic transition ... There was morphogenetic function of nuclei
1Cancer and Developmental Cell Biology Division, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A-STAR), Singapore, Singapore. vlad@imcb.a-star.edu.sg
Zebrafish
|July 2, 2009
Summary
Alexander Neyfakh
Area of Science:
- Developmental Biology
- Genetics
- Molecular Biology
Background:
- The activation of the embryonic genome marks a critical developmental transition.
- Early research explored the timing and mechanisms of this genomic activation.
Observation:
- X-ray irradiation of fish eggs revealed radiation-sensitive targets within the nucleus.
- Alexander Neyfakh observed deleterious effects linked to nuclear function post-fertilization.
Findings:
- Neyfakh identified the onset of zygotic genome function, termed the morphogenetic function of nuclei.
- This function is now recognized as the midblastula transition (MBT).
Implications:
- Neyfakh's work on the loach (Misgurnus fossilis) laid the foundation for understanding the maternal-zygotic transition.
- His research provided crucial insights into early embryonic gene expression and development.
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