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ˈheterosome
ˈheterosome n.
Brit. 
/ˈhɛt(ə)rə(ʊ)səʊm/
, /ˈhɛt(ə)rə(ʊ)səʊm/U.S. /ˈhɛdərəˌsoʊm/
(a) a flatfish; (b) Cytology a sex chromosome./ˈhɛdərəˌsoʊm/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
1938 A. F. Shull Heredity (ed. 3) x. 92 The spermatozoa of a mammal are of two kinds, half of them containing an X chromosome, half of them a Y (or no heterosome at all in species in which Y has been lost).
1966 D. M. Kramsch tr. E. Grundmann Gen. Cytol. ii. 102 Man has 22 autosomes and one heterosome in a haploid set.
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as lemmas