Directional asymmetry

{
  "id": "MLC-T-CHM-003268",
  "term": "Directional asymmetry",
  "field": "Chemistry",
  "definition": "A pattern in a population in which one side of a bilaterally symmetrical trait is consistently larger than the other, so that the mean of the right-minus-left difference departs from zero. It differs from fluctuating asymmetry, where the differences are random about a mean of zero, and from antisymmetry, where the larger side varies between individuals, as in the major claw of fiddler crabs.",
  "subject": "Chemistry and Human Health",
  "see_also": [
    "antisymmetry",
    "fluctuating asymmetry",
    "population"
  ],
  "references": [
    "PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 867 (https://doi.org/10.1351/PAC-REC-08-07-09)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/directional-asymmetry/"
}