单项选择题
A.遗传率30%,人群发病率0.2%B.遗传率70%,人群发病率0.2%C.遗传率30%,人群发病率0.1%D.遗传率70%,人群发病率0.1%
A.0.7B.0.2C.0.047D.0.3
A.∑(O-E)2/EB.h2=b/rC.h=p(Xc-Xr)/acD.f=√P