From fertilization to first cleavage.
In ascidian eggs, fertilization triggers a contraction, the
emission of 2 polar bodies, the migration and fusion of male
and female pronuclei and large rotational movements before first
cleavage which takes place 50 minutes after fertilization. Accelerated
300 times. Sequence recorded by Christian Sardet and Shinya
Inoue. From Sardet, et al. (1989). Development 105, 237-249. |
