An Rh(-) woman marries a Rh(+) man gave birth to three children ,one which died of erythroblastosis foetalis. What is the genotype of woman and man ?

Question

anonymous · Answer

$$Rh ^{-} Rh ^{+},Rh ^{+}Rh ^{-}$$
OR

$$Rh ^{+}Rh ^{+}, Rh ^{+} Rh ^{+}$$

anonymous · Answer

is the Rh on the sex chromosomes?

anonymous · Answer

yes

anonymous · Answer

Assuming it is on the X chromosome females only donate X and males can donate X or Y
Thus you can get

Thus the female would have to have one X- and one X+ and male would have X+
We assume that X- is the dominant allele

XX +/-
XY +
XY -

anonymous · Answer

if the Female only had X- X- and the male was X+

then you could only have two possible phenotypes

XY -
and
XX +/-

anonymous · Answer

correct me if i am wrong 
is the answer the first option

anonymous · Answer

Read my solution if you don't understand articulate it for me not to be rude but I'm busy :)

anonymous · Answer

is Y always of  + type

anonymous · Answer

Y wouldn't carry the allele

anonymous · Answer

it is a totally different chromosome

anonymous · Answer

Well I assume

anonymous · Answer

oh thanks i got the answer 
thanks a lot @cuddlepony  ^_^

anonymous · Answer

so was I right lol?

anonymous · Answer

yes you r right