Definition of heterochromosome in English:

heterochromosome

Syllabification: het·er·o·chro·mo·some
Pronunciation: /ˌhedərōˈkrōməˌsōm
 
/

noun

Another term for sex chromosome.

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Word of the day katzenjammer
Pronunciation: ˈkatzənˌdʒamə
noun
confusion; uproar