disomen.

/ˈdʌɪsəʊm/

Etymology: < di- comb. form + -some comb. form.

Biology.

Any pair of homologous chromosomes.

ΚΠ

1921 A. F. Blakeslee in Amer. Naturalist 55 259 The homologous chromosomes therefore form tetrasomes, to use a new term, instead of disomes as in normals or trisomes as in triploid plants.

1921 A. F. Blakeslee in Amer. Naturalist 55 259 The following terms are suggested to designate sets with numbers of chromosomes from 1 to 12: monosome, disome, trisome, [etc.].

1954 Genetics 39 339 PWT strains, whether originating as disomics or as heterocaryotic ascospores, might be expected to have a wild phenotype.

Derivatives

diˈsomic adj. relating to or characterized by a disome; usually (of a haplont), having one extra chromosome which is homologous with a chromosome of the normal haploid set; also as n., a disomic organism, etc.

ΚΠ

1924 A. F. Blakeslee in Proc. National Acad. Sci. U.S.A. 10 114 The ratios actually found resemble those in disomic rather than in trisomic inheritance.

1946 Nature 21 Sept. 418/1 Genetical tests based on the difference between tetrasomic and disomic ratios.

1965 J. R. S. Fincham & P. R. Day Fungal Genetics (ed. 2) v. 120 Although aneuploidy in the nuclei of vegetative mycelium of Neurospora has not been shown to occur.., the occurrence of n + 1 (or disomic) ascospores is well established.

This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018).

单词	disome
释义	disomen. /ˈdʌɪsəʊm/ Etymology: < di- comb. form + -some comb. form. Biology. Any pair of homologous chromosomes. ΚΠ 1921 A. F. Blakeslee in Amer. Naturalist 55 259 The homologous chromosomes therefore form tetrasomes, to use a new term, instead of disomes as in normals or trisomes as in triploid plants. 1921 A. F. Blakeslee in Amer. Naturalist 55 259 The following terms are suggested to designate sets with numbers of chromosomes from 1 to 12: monosome, disome, trisome, [etc.]. 1954 Genetics 39 339 PWT strains, whether originating as disomics or as heterocaryotic ascospores, might be expected to have a wild phenotype. Derivatives diˈsomic adj. relating to or characterized by a disome; usually (of a haplont), having one extra chromosome which is homologous with a chromosome of the normal haploid set; also as n., a disomic organism, etc. ΚΠ 1924 A. F. Blakeslee in Proc. National Acad. Sci. U.S.A. 10 114 The ratios actually found resemble those in disomic rather than in trisomic inheritance. 1946 Nature 21 Sept. 418/1 Genetical tests based on the difference between tetrasomic and disomic ratios. 1965 J. R. S. Fincham & P. R. Day Fungal Genetics (ed. 2) v. 120 Although aneuploidy in the nuclei of vegetative mycelium of Neurospora has not been shown to occur.., the occurrence of n + 1 (or disomic) ascospores is well established. This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018). < n.1921
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