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Meaning of ZW system | Babel Free

Noun CEFR B2

Definitions

A system for characterizing the sex of certain animals, such as butterflies and Komodo dragons, in which males have two of the same kind of sex cell (ZZ) and females have two distinct sex cells (ZW).

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

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