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nounreflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
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noun(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)
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type of:
Parts of miosis
- "anaphase"
- "cytokinesis"
- "karyokinesis"
- "metaphase"
- "prophase"
- "segregation"
- "telophase"