paracentric


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paracentric

[¦par·ə¦sen·trik]
(design engineering)
Pertaining to a key and keyway with longitudinal ribs and grooves that project beyond the center, as used in pin-tumbler cylinder locks to deter lockpicking.
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References in periodicals archive ?
Iron bars and paracentric keys are fast becoming antiques.
Countersunk rivets and a hardened steel shackle provide added protection, while a paracentric keyway with drill protection makes the lock difficult to pick.
I explain with George Ohlschlager (Clinton & Ohlschlager, 2002) in Competent Christian Counseling what we call a "paracentric" approach to Christian counseling:
2 indicated that translocations or paracentric inversions occurred in the amphiploid.
(13.) Akita S, Kuratomi H, Abe K, Harada N, Nukae N and Niikawa N: EEC syndrome in a girl with paracentric inversion (7) (q22.1; q36.3).
Genetic exchange across a paracentric in version of the mouse t complex.
(74) The most common rearrangement event, a small paracentric intrachromosomal inversion fusing EML4 and ALK, may be difficult to perceive because it may lead to a subtle split in the probes, leading to false-negative results if overlooked, and to false-positive results as a result of assay noise due to aberrant probe hybridization or high background signal.
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.
Other rearrangements involving 12q14~q15, such as paracentric inversions, have also been reported.
The presence of translocations, paracentric inversions or fusions and differences in C-banding patterns of their chromosomes by amplification or shrinking of heterochromatic segments, reveal a complex multispaced genome configuration where about 30 different clones of W.
Often, the roof hatches are designed with security locks, requiring the use of a paracentric or mogel key to unlock them.
Muller (1940) proposed the following terminology: inversions including the centromere are pericentric and inversions limited to a single chromosome arm are paracentric. If the inverted region is large enough, the homologous chromosomes in an inversion heterozygote pair gene by gene and form a loop configuration that can be observed at pachytene.