Each chromosome has a constriction point called the centromere, which divides the chromosome into two sections, or “arms.”
Source: tatoeba (12064330)
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Each chromosome has a constriction point called the centromere, which divides the chromosome into two sections, or “arms.”
Source: tatoeba (12064330)
The aberrant bivalents with single terminal chiasmata are specially liable to this failure of orientation, presumably because their centromeres lie exceptionally far apart, as is the case in similar circumstances in a Lilium hybrid with reduced chiasma-frequency.
Source: wiktionary
Every chromosome has a long arm and a short arm separated by a pinch point known as a centromere.
Source: wiktionary
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.