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单词 B chromosome
释义

Definition of B chromosome in English:

B chromosome

noun
Genetics

  • 1A chromosome reckoned as the second in various classifications; now disused.

  • 2A small extra chromosome, found especially in plants and invertebrates, which has no equivalent in the basic chromosome set of a species, and has an irregular, non-Mendelian, mode of inheritance.

Origin

Early 20th century; earliest use found in American Naturalist.

Definition of B chromosome in US English:

B chromosome

noun
Genetics

  • 1A chromosome reckoned as the second in various classifications; now disused.

  • 2A small extra chromosome, found especially in plants and invertebrates, which has no equivalent in the basic chromosome set of a species, and has an irregular, non-Mendelian, mode of inheritance.

Origin

Early 20th century; earliest use found in American Naturalist.
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更新时间：2026/1/2 5:23:15