inversion

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The relationship of crossing over to chromosome synapsis in a short paracentric inversion.
The only karyotypic changes suggested by map comparisons in the Stegomyia is a paracentric inversion on LG I converting the central position of Me and sex in aegypti to a terminal position in scutellaris.
Shields and Procunier (1982) described four sibling species of the Simulium arcticum complex in Alaska, and Procunier (1984) described a fifth in western Canada based on possession of unique paracentric inversions in Y chromosomes.