WRT sperm deciding the gender - isn't there some medical condition where some omwne can't carry boys? So it seems to me that no matter what the sperm is determining, if mum can't carry boys, then obviously she's only going to have girls. And if some women have this but have early losses, then they'd neevr know, KWIM? Just my thoughts!

My dad has 2 brothers, no sisters. All the children coming from them have only been girls - 5 in total. My sister is the first out of the 5 of us to have a baby, and she had a boy. We'll find out in a few weeks if this one is too! But I have a theory that we'll all have boys as well. It'll be interesting to find out anyway!