animal pole

American  

noun

Biology.

1. the formative part of an ovum, having the greatest amount of cytoplasm and containing the nucleus.

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Etymology

Origin of animal pole

First recorded in 1885–90

Example Sentences

The yolk is pale green, and the animal pole is brown.

From Amphibians and Reptiles of the Rainforests of Southern El Peten, Guatemala by Duellman, William E.

The diagrams show the positions of the segmentation spheres and of the contained nuclei as seen from the animal pole.

From The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development by Hertwig, Oscar

All the eggs are viewed from the animal pole.

From The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development by Hertwig, Oscar

After the ovum has finished its growth, and elaborated the yolk within itself, a peculiar change occurs in the small area free from yolk-- the animal pole, in which the germinal vesicle lies.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)