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Why not?

Posted by adamsonj on 29 Aug 2011 at 16:52 GMT

Crossing over between homologous chromosomes does not occur in female Lepidoptera
http://plosone.org/article/info:doi/10.1371/journal.pone.0019315#article1.body1.sec2.sec2.p1

I'd like a little more explanation here; why does this happen in Lepidoptera? Easy to understand if we're just talking Z/W chromosomes, but the language sounds like this applies to all chromosomes.

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