single X chromosome...

Men have a Y and X chromosome, and women X X, but there is a condition where a woman has only one X chromosome, though it is very rare.

Does anyone know the name of this condition or have any information on it?

Someone close to me knows the answer to your question, in great detail. I will be meeting with them later on tonight and I will ask for you. I have heard them talk about it a few times in the past, but my memory fails me at the moment. So I will get back to you at my earliest convenience…

A women with a single X chromosome will be suffering from Turner’s symdrome. It is not hereditary, as it occurs only when reorganisation of chromosomes in meiosis goes wrong.
Women with Turner’s syndrome are usualyy quite short, have a ‘webbed’ neck, and usually have problems related to a lack of oestrogen - poor memory, problems with menstrual cycle, delayed puberty. They rarely reproduce.

Anything else, Magius?