chromosome
noun [ C ] uk/ˈkrəʊ.mə.səʊm/ us/ˈkroʊ.mə.soʊm/
染色体
any of the rod-like structures found in all living cells, containing the chemical patterns that control what an animal or plant is like
X and Y chromosomes X染色体和Y染色体
sex chromosomes 性别染色体