inversion

(noun)

a segment of DNA in the context of a chromosome that is reversed in orientation relative to a reference karyotype or genome

Related Terms

  • translocation

Examples of inversion in the following topics:

  • Chromosomal Structural Rearrangements

    • A pericentric inversion that is asymmetric about the centromere can change the relative lengths of the chromosome arms, making these inversions easily identifiable.
    • When one homologous chromosome undergoes an inversion, but the other does not, the individual is described as an inversion heterozygote .
    • This inversion is not present in our closest genetic relatives, the chimpanzees.
    • Pericentric inversions include the centromere, and paracentric inversions do not.
    • A pericentric inversion can change the relative lengths of the chromosome arms; a paracentric inversion cannot.
  • The Mechanics of Human Breathing

    • Boyle's Law is the gas law which states that in a closed space, pressure and volume are inversely related.
    • When discussing the detailed mechanics of breathing, it is important to keep this inverse relationship in mind.
    • This graph of data from Boyle's original 1662 experiment shows that pressure and volume are inversely related.
  • Movement at Synovial Joints

    • Eversion, the opposite of inversion, involves moving of the sole of the foot outward, away from the midline of the body .
    • (i) Eversion of the foot moves the bottom (sole) of the foot away from the midline of the body, while foot inversion faces the sole toward the midline.
  • Light

    • A wavelength (which varies inversely with frequency) manifests itself as color.
  • Osmosis

    • Osmosis is the movement of water through a semipermeable membrane according to the concentration gradient of water across the membrane, which is inversely proportional to the concentration of solutes.
  • Life History Patterns and Energy Budgets

    • In animals, fecundity is inversely related to the amount of parental care given to an individual offspring.
  • Population Size and Density

    • Australian mammals show a typical inverse relationship between population density and body size.
  • pH, Buffers, Acids, and Bases

    • The pH scale is an inverse logarithm that ranges from 0 to 14: anything below 7.0 (ranging from 0.0 to 6.9) is acidic, and anything above 7.0 (from 7.1 to 14.0) is basic (or alkaline).
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