B chromosome

noun
variants: also B-chromosome

Medical Definition of B chromosome 

: a small, usually heterochromatic chromosome present in addition to the normal complement of chromosomes in some members of a species

Note: B chromosomes do not contain any structural genes and have a highly variable pattern of inheritance separate from that of the normal chromosomal complement. They are most often found in plants and invertebrates.

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Dictionary Entries near B chromosome

B cell

BCG

BCG vaccine

B chromosome

BCLS

BCNU

B complex

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