四级亲缘的近婚系数是指

A．1/2×1/2=1/4

B．1/2×1/4=1/8

C．1/2×1/8=1/16

D．1/2×1/16=1/32

E．1/2×1/32=1/64

[单选题]五级亲缘的近婚系数是指A．1/2×1/2=1/4B．1/2×1/4=1/8C．1/2×1/8=1/16D．1/2×1/16=1/32E．1/2×1/32=1/64

[单选题]二级亲缘的近婚系数是指A．1/2×1/2=1/4B．1/2×1/4=1/8C．1/2×1/8=1/16D．1/2×1/16=1/32E．1/2×1/32=1/64

[单选题]一级亲缘的近婚系数是指A．1/2×1/2=1/4B．1/2×1/4=1/8C．1/2×1/8=1/16D．1/2×1/16=1/32E．1/2×1/32=1/64

[单选题]三级亲缘的近婚系数是指A．1/2×1/2=1/4B．1/2×1/4=1/8C．1/2×1/8=1/16D．1/2×1/16=1/32E．1/2×1/32=1/64

[单选题]一级亲缘的近婚系数是指A.×=B.×=C.×=D.×=E.×=

[填空题] 一级亲缘的亲婚系数为____，二级为____，三级为____，四级_____，五级为____。

[单选题]近婚系数是指A．=1/2亲缘系数B．1/2×1/2=1/4C．1/2×1/4=1/8D．1/2×1/8=1/16E．1/2×1/16=1/32

[单选题]近婚系数是指A.为亲缘系数B.×=C.×=D.×=E.×=

[名词解释] 近婚系数

[主观题]英语四级难度系数?