劍橋詞典a sex chromosome (= structure containing chemical patterns ) that exists only in male cells Y染色體 If a Y-chromosome pairs up with an X-chromosome during fertilization, a male baby will result . 如果受孕過程中一個(gè)Y染色體與一個(gè)X染色體相結(jié)合，則發(fā)育為男嬰。 返回 Y-chromosome