monosomicadj.n.
/ˌmɒnə(ʊ)ˈsəʊmɪk/, U.S. /ˌmɑnəˈsoʊmɪk/ Genetics.
A. adj.
Having or designating a diploid chromosome complement in which one (or occasionally part of one or more than one) chromosome lacks its homologous partner.
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the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > chromosome > types of chromosome
supernumerary1907
autosomal1911
lampbrush1911
trisomic1921
hexasomic1922
tetrasomic1922
monosomic1926
polytene1935
polytenic1952
polysomal1962
polytenized1974
1926 Univ. Calif. Publ. Bot. 11 67 Monosomic forms may be used advantageously for a determination of linkage groups.
1957 C. P. Swanson Cytol. & Cytogenetics (1958) vi. 190 Probably the best known monosomic type is the haplo-IV Drosophila.
1961 Lancet 23 Sept. 723/2 The normal male is naturally monosomic for the X, and the XO-female can reach maturity in reasonably good health.
2000 Hereditas 132 29 Monosomic F1 plants were allowed to self-pollinate and to produce F2 seeds.
B. n.
A monosomic organism or variety.
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the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > types of chromosome > individual
tetrasomic1922
monosomic1926
1926 Univ. Calif. Publ. Bot. 11 61 This paper is devoted to a second form called ‘fluted’, which has been found on cytological examination to be a monosomic (2n − 1).
1932 Genetics 17 689 Comparatively few investigations have been concerned with a study of monosomics (2n–1 types) and their mode of inheritance.
1974 Nature 19 Apr. 714/3 Monosomics and trisomics have seldom been developed in the same species.
1999 Jrnl. Med. Genetics 36 694 Eight different partial aneuploidies for chromosome 21 were characterised... The length of the corresponding trisomies and monosomies was ascertained for five partial trisomics and three partial monosomics.
This entry has been updated (OED Third Edition, December 2002; most recently modified version published online March 2022).
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adj.n.1926