Definition of nucleolus organizer
: the specific part of a chromosome with which a nucleolus is associated especially during its reorganization after nuclear division
— called also nucleolar organizer
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“Nucleolus organizer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nucleolus%20organizer. Accessed 2 Jul. 2022.
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Time Traveler for nucleolus organizer
The first known use of nucleolus organizer was in 1939
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