Paracentric inversions | definition of paracentric inversions by Medical dictionary
paracentric inversion (redirected from paracentric inversions)
Also found in: Encyclopedia
inversion in a chromosome of a single segment in which the centromere is not included.
Farlex Partner Medical Dictionary © Farlex 2012
paracentric inversion a chromosomal mutation involving INVERSION of a segment of one arm of a chromosome, not involving the CENTROMERE.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive
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.
Crossovers within the loops of both pericentric and paracentric inversions
result in chromatids with duplications and deficiencies.
This chromosome has been shown to be polymorphic for up to six paracentric inversions
(Ruiz et al.
There is a long history of theoretical models and empirical tests dealing with the relationship between inversion length and the processes generating and maintaining paracentric inversions
in the Drosophila genus.
White (1978) observed that in over 300 species of Drosophila, paracentric inversions
were 200 times more common than pericentric.
They owe their prevalence in part to two biological peculiarities of Drosophila that minimize the harmful effects of crossing-over within a paracentric inversion