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2017 Word of the Year

B chromosome

noun, Genetics.
1.
a type of densely staining chromosome of uncertain biological function, found in many plant and animal species.
Also called accessory chromosome, satellite chromosome.
Origin of B chromosome
1975-1980
First recorded in 1975-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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