Your girls have another 1/2 prob to pass your x dna to their boys... Your x dna will not disappear. it has the same probality to survive as your y dna...
Ultimately
【在 s*******a 的大作中提到】 : but my girls have only 1/2 prob passed *my* x DNA to their girls. Ultimately : the prob is zero. Think about itl
s*a
18 楼
let me put it this way. if you only have girls, there is no way for you to ensure that your dna will be carried on. it's pure prob, and the ultimate prob is 0. but if you have boys, you are able to use a simple rule to ensure, which is " you boys must have your own boys, and so on". of course your descendants must follow the protocol for it to work. but at least you theoretically have a way here.
【在 z****9 的大作中提到】 : Your girls have another 1/2 prob to pass your x dna to their boys... : Your x dna will not disappear. it has the same probality to survive as : your y dna... : : : Ultimately
【在 s*******a 的大作中提到】 : let me put it this way. if you only have girls, there is no way for you to : ensure that your dna will be carried on. it's pure prob, and the ultimate : prob is 0. : but if you have boys, you are able to use a simple rule to ensure, which is " you boys : must have your own boys, and so on". of course your descendants must follow : the protocol for it to work. but at least you theoretically have a way here.
v*s
20 楼
这个问题太内涵了,拜。
【在 H********g 的大作中提到】 : 从胎儿上取点细胞做个SNP分析就行了。没有你X的都流掉。 : 再说儿子的儿子,就肯定带你的y吗?肯定吗,肯定吗?....吗? : : is " you boys : follow : here.
t*s
21 楼
but, the prob of you son will have a son is also 1/2
is " you boys follow here.
【在 s*******a 的大作中提到】 : let me put it this way. if you only have girls, there is no way for you to : ensure that your dna will be carried on. it's pure prob, and the ultimate : prob is 0. : but if you have boys, you are able to use a simple rule to ensure, which is " you boys : must have your own boys, and so on". of course your descendants must follow : the protocol for it to work. but at least you theoretically have a way here.
B*m
22 楼
线粒体就全是母系的,所以咱们一直往前倒腾10几万年都是一个妈生的,叫做线粒体夏 娃。
【在 t***s 的大作中提到】 : but, the prob of you son will have a son is also 1/2 : : is " you boys : follow : here.