Tag: ZW system

How Sex Chromosomes Evolved: From Identical Pairs to Differentiated Y and W

How Sex Chromosomes Evolved: From Identical Pairs to Differentiated Y and W

May 9 2026 / Science & Biology

Explore how sex chromosomes evolved from identical autosomes into distinct X, Y, Z, and W structures. Learn about recombination suppression, dosage compensation, and recent findings challenging classical models.

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