(genetics) cell division that produces reproductive cells
in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants) Synonym(s):meiosis, miosis, reduction division
reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller Synonym(s):light reflex, pupillary reflex, miosis, myosis
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