microlecithal造句

Microlecithal eggs require minimal yolk mass.
In animals with high egg mortality, microlecithal eggs are the norm, as in bivalves and marine arthropods.
However, the latter are more complex anatomically than e . g . flatworms, and the small microlecithal eggs do not allow full development.
In anatomically simple animals, such as cnidarians and flatworms, the fetal development can be quite short, and even microlecithal eggs can undergo direct development.
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