sickle cell trait

基本解釋

Approximately 5% of the world’s population carries trait genes for haemoglobin disorders, mainly, sickle-cell disease and thalassaemia.
世界人口近5%攜帶血紅蛋白疾患的特征基因，血紅蛋白疾患主要包括鐮狀細胞病和地中海貧血。
Sickle-cell disease and severe forms of thalassaemia (thalassaemia major) can occur only when both parents are carriers of trait genes for the particular condition.
衹有儅父母雙方都攜帶特定疾病的特征基因時，才有可能發(fā)生鐮狀細胞病和嚴重的地中海貧血(重型地中海貧血)。