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Can I read A unilateral cleavage furrow in embryos ofS. droebachiensis on EtoBox?
A unilateral cleavage furrow in embryos ofS. droebachiensis by John A. Anstrom; Robert G. Summers is a Environmental Science article available to read on EtoBox.
What is A unilateral cleavage furrow in embryos ofS. droebachiensis about?
Embryos of the sea urchin, Strongylocentrotus droebachiensis, develop normally at temperatures ranging from 8°C to 0°C. An embyro cultured at 8°C cleaves symmetrically about its equator whereas one cultured at 0°C cleaves unilaterally. In embryos cultured at 8°C the mitotic apparatus (MA) occupies the entire cell volume at late anaphase whereas at 0°C the MA at the same stage is 20% smaller (Anstrom and Summers, '83). At 8°C the MA is centered within the zygote whereas at 0°C it is located eccentrically. The cleavage furrow always forms at the cell surface closest to the eccentric MA. We attribute the unilateral cleavage furrow in the 0°C embryo to the small size and eccentric placement of the mitotic apparatus within it. Both symmetrical and unilateral cleavage are apparently normal in this species, suggesting a common mechanism for both types of cleavage. Key words sea urchin, cell division, cleavage, mitotic apparatus Mitosis and cleavage are coordinated in sea urchin eggs so that cleavage will follow mitosis immediately. The mitotic apparatus
Who reads A unilateral cleavage furrow in embryos ofS. droebachiensis?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- John A. Anstrom; Robert G. Summers
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0022-104X)
- Published
- 1983
- Language
- EN
- Field
- Environmental Science (Life Sciences)