The process of reduction from a diploid state to a haploid state, usually through meiosis, or the condition of being haploid.
From Greek 'haplous' (single) + '-osis' (a condition or process). Coined in 20th-century biology to describe chromosomal reduction.
Haplosis is literally what makes sex work—it's the process where organisms cut their chromosome count in half so that when sperm meets egg, the baby gets a full set again!
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