| animal hemisphere |
half of an egg or embryo that contains less yolk and/or which divides more rapidly in comparison to the vegetal hemisphere. In eggs or embryos with considerable yolk, the animal hemisphere will be the upper half when the embryo is allowed to settle by gravity - yolky cytoplasm being more dense than yolk-free cytoplasm.
출처: home.sandiego.edu/~cloer/bio376/376gloss/376gloss....
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