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1. karyotype-the appearance of the chromosomal makeup of a somatic cell in an individual or species (including the number and arrangement and size and structure of the chromosomes). physical composition, composition, make-up, makeup, constitution-the way in which someone or something is composed. Translations.
The karyotype is the set of chromosomes, both autosomes and sex chromosomes, in an organism. The karyotype found in 90% of the large family of short-horned grasshoppers, Acrididae, is usually given as 2n d- = 23 [22 + X (or XO)], the female karyotype, 23 (22 + XX), being usually inferred from the male.