Sentence examples for spiral cleavage from inspiring English sources

The oligochaetes undergo a highly modified form of spiral cleavage.

The eggs undergo spiral cleavage, and the developing embryos are retained until the first larval stage, called the nauplius.

Their development, like that of spoonworms (echiurids), resembles that of annelids in that spiral cleavage and a trochophore larva occur.

Spiral cleavage occurs in the zygote; a free-swimming trochophore larva develops and metamorphoses into a burrowing worm.

The trochophore (free-swimming) larva, which results from spiral cleavage of the zygote (the cell formed by the fusion of two gametes), undergoes metamorphosis to its characteristic shape.

In summary, EST data validate Ecdysozoa and group the annelid worms with other phyla sharing spiral cleavage (and thus reject the Articulata).

Traditional key characteristics such as segmentation, radial versus spiral cell cleavage patterns in early embryogenesis, and modes of coelom formation appear to be more plastic and less reliable as phylogenetic characters than previously thought.

Hence this development pattern is often described as "spiral determinate cleavage".

Annelid eggs, like those of flatworms and mollusks, exhibit spiral, or determinate, cleavage, so called because early differentiation of various regions occurs; in indeterminate cleavage (in echinoderm and chordate eggs), early differentiation does not occur.

(2, 3) Early cleavage is typically spiral and determinate in protostomes, which means that the dividing cells are oriented at an angle to one another and that the ultimate fate of the cells is mostly determined from the beginning.

Maybe so, but if Busdriver has any alternative to offer, it's virtually impossible to tell what it is, as the over-caffeinated rap style that was effective on albums like 2004's 'Cosmic Cleavage' has now spiralled off into its own universe, his garbled faux-operatic flow delivered at such a pace that any linguistic dexterity is lost.