Ellsworth Huntington’s conclusion was based on _____.
Ellsworth Huntington decided that climate and temperature have _____.
Underline the sentence that gives examples of unpredictability of Huntington’s disease.
Ellsworth Huntington decided that climate and temperature have _____.
Ellsworth Huntington’s conclusion was based on _____.
Huntington氏舞蹈症是人类中罕见的严重疾病,通常在老年发病。患这种病的人总有双亲之一早亡,而两个正常人婚配一般来讲不会生患这种病的子女,试分析这种病是显性遗传还是隐性遗传。
Huntington舞蹈病的发病与哪一种三核苷酸重复过多有关:()
Huntington舞蹈病为常染色体显性遗传病,如其外显率为80%,一个杂合型患者与一正常人婚后生育患儿的概率为()。
Huntington舞蹈病是一种由显性基因引起的遗传病,发病年龄较迟,下图为一Huntington舞蹈病的家系图。III1的外祖父I 1患有该病,III 1现已25岁,其母II 2已43岁,均无发病迹象。已知43岁以前发病的占64%,25岁以前发病的占8%,问III 1将发病的概率是多少?(提示:用Bayes定理先求出II 2尚未发病但为杂合子的条件概率)
Huntington舞蹈症(AD),基因中有(CAG)n的变化,正常人n=9~34患者n=37~100如果此基因是父亲传来的,子女发病年龄较早、而且病情严重如果此基因是母亲传来的,子女发病较晚、而且病情轻请问是什么现象()