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- Chromosomal_inversion abstract "An inversion is a chromosome rearrangement in which a segment of a chromosome is reversed end to end. An inversion occurs when a single chromosome undergoes breakage and rearrangement within itself. Inversions are of two types: paracentric and pericentric. Paracentric inversions do not include the centromere and both breaks occur in one arm of the chromosome. Pericentric inversions include the centromere and there is a break point in each arm. Cytogenetic techniques may be able to detect inversions, or inversions may be inferred from genetic analysis. Nevertheless, in most species small inversions go undetected. In insects with polytene chromosomes, for example Drosophila, preparations of larval salivary gland chromosomes allow inversions to be seen when they are heterozygous. This useful characteristic of polytene chromosomes was first advertised by Theophilus Shickel Painter in 1933.Inversions usually do not cause any abnormalities in carriers as long as the rearrangement is balanced with no extra or missing DNA. However, in individuals which are heterozygous for an inversion, there is an increased production of abnormal chromatids (this occurs when crossing-over occurs within the span of the inversion). This leads to lowered fertility due to production of unbalanced gametes.The most common inversion seen in humans is on chromosome 9, at inv(9)(p12q13). This inversion is generally considered to have no harmful effects, but there is some suspicion it could lead to an increased risk for miscarriage or infertility for some affected individuals.[citation needed]An inversion does not involve a loss of genetic information, but simply rearranges the linear gene sequence.Families that may be carriers of inversions may be offered genetic counseling and genetic testing.".
- Chromosomal_inversion thumbnail Inversioncartoon.gif?width=300.
- Chromosomal_inversion wikiPageID "1342193".
- Chromosomal_inversion wikiPageRevisionID "603037001".
- Chromosomal_inversion hasPhotoCollection Chromosomal_inversion.
- Chromosomal_inversion subject Category:Chromosomes.
- Chromosomal_inversion type Body109224911.
- Chromosomal_inversion type Chromosome105442131.
- Chromosomal_inversion type Chromosomes.
- Chromosomal_inversion type NaturalObject100019128.
- Chromosomal_inversion type Object100002684.
- Chromosomal_inversion type PhysicalEntity100001930.
- Chromosomal_inversion type Whole100003553.
- Chromosomal_inversion comment "An inversion is a chromosome rearrangement in which a segment of a chromosome is reversed end to end. An inversion occurs when a single chromosome undergoes breakage and rearrangement within itself. Inversions are of two types: paracentric and pericentric. Paracentric inversions do not include the centromere and both breaks occur in one arm of the chromosome. Pericentric inversions include the centromere and there is a break point in each arm.".
- Chromosomal_inversion label "Chromosomal inversion".
- Chromosomal_inversion label "Inversie (chromosomen)".
- Chromosomal_inversion label "Inversion (Genetik)".
- Chromosomal_inversion label "Inversione (cromosoma)".
- Chromosomal_inversion label "Inversión cromosómica".
- Chromosomal_inversion label "Inversão cromossômica".
- Chromosomal_inversion label "Inwersja chromosomowa".
- Chromosomal_inversion label "Хромосомная инверсия".
- Chromosomal_inversion sameAs Inversion_(Genetik).
- Chromosomal_inversion sameAs Inversión_cromosómica.
- Chromosomal_inversion sameAs Inversione_(cromosoma).
- Chromosomal_inversion sameAs 염색체_역위.
- Chromosomal_inversion sameAs Inversie_(chromosomen).
- Chromosomal_inversion sameAs Inwersja_chromosomowa.
- Chromosomal_inversion sameAs Inversão_cromossômica.
- Chromosomal_inversion sameAs m.04v5nb.
- Chromosomal_inversion sameAs Q1070877.
- Chromosomal_inversion sameAs Q1070877.
- Chromosomal_inversion sameAs Chromosomal_inversion.
- Chromosomal_inversion wasDerivedFrom Chromosomal_inversion?oldid=603037001.
- Chromosomal_inversion depiction Inversioncartoon.gif.
- Chromosomal_inversion isPrimaryTopicOf Chromosomal_inversion.
