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西亚试剂:Transposons drive sex chromosome evolution

Transposons drive sex chromosome evolution

Isabel Lokody

Two new studies from the same group show how transposons can drive the evolution of sex chromosomes and how this affects dosage compensation.

Drosophila miranda contains three different X chromosomes that were formed at different times. Males of this species contain one copy of each X chromosome, whereas females contain two; thus, to equalize expression of X-ch…