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ˌheteroˈchromosome
ˌheteroˈchromosome n. 
/ˌhɛdərəˈkroʊməˌsoʊm/ Cytology a modified or differentiated chromosome, esp. a sex-chromosome.
Brit. /ˌhɛt(ə)rə(ʊ)ˈkrəʊməsəʊm/
, /ˌhɛt(ə)rə(ʊ)ˈkrəʊməsəʊm/U.S. /ˌhɛdəroʊˈkroʊməˌsoʊm/
, /ˌhɛdəroʊˈkroʊməˌsoʊm//ˌhɛdərəˈkroʊməˌsoʊm/ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > types of chromosome
chromoplastid1885
accessory chromosome1899
chromoplast1902
X1902
heterochromosome1904
idiochromosome1905
macrochromosome1905
allosome1906
autosome1906
monosome1906
sex chromosome1906
supernumerary1907
X chromosome1911
Y chromosome1911
univalent1912
euchromosome1914
W1917
monosome1921
tetrasome1921
trisome1921
heterosome1938
isochromosome1939
trisomic1939
metacentric1945
acrocentric1949
polycentric1953
Philadelphia chromosome1961
monocentric1979
1904 T. H. Montgomery in Biol. Bull. VI. 145 The Heterochromosomes. I offer this name to include those peculiarly modified chromosomes to which have been given the names ‘accessory chromosomes’.., ‘small chromosomes’..and ‘chromatin nucleoli’.
1926 Nature 9 Jan. 50/2 Cytological investigations in the Salicaceæ, undertaken to demonstrate the presence or absence of sex- or heterochromosomes in certain species of Salix.
1968 J. A. Serra Mod. Genetics III. xxiii. 552 In haploid organisms or the haploid phase the heterochromosomes are found separately in the mitoses of each sex.
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as lemmas