mesolecithal

Example:The embryologists were examining middle-lobed yolk patterns in reptile eggs.

Definition:A similar condition in which the yolk is concentrated in the center and divided into two lobes, with a moderate amount of yolk between them.

Example:This species of fish produces moderate-yolked eggs suitable for undersea environments.

Definition:Having a yolk quantity that is neither too much nor too little, especially in a center-lic TED egg.