quadrupeds quadr = four; ped = foot.
quantitative inheritance. See polygenic inheritance.
quantitative trait locus (QTL) The set of genes
that governs the quantity of a trait that is not completely determined
by any one gene acting alone.
quantitative trait A genetic trait that is determined
by multiple interacting loci, and for which there is a range of
phenotypes between phenotypic extremes.
quark A subatomic particle found in the nucleus
of the atom.
quarks A fundamental constituent of matter generally
found in protons and neutrons. To date, six quarks are known and
termed; up, down, strange, charm, bottom, and top.
quartan malaria Malaria with fevers recurring
every 72 hours. Caused by Plasmodium malariae.
queen. In entomology, the single fully developed
female in a colony of social insects such as bees, ants, and termites,
distinguished from workers, nonreproductive females, and soldiers.
quotidian malaria Malaria with fevers recurring
every 24 hours. Found in cases of overlapping infections.