We know that one of the kids has inheritd a gene responsible for blood coagulation from her mother, Chen said. Humans whose blood does not clot quickly can develop hemophilia.

• 农委会畜产试验所组长陈立人：这两头小羊当中，我们已经知道其中有一头遗传了宝钰的凝血基因。人类的血液中如果欠缺凝血因子的话，就会产生血友病。