Thanks for the answers.

5) I have heard some genes are only given to you by your mother and others exclusively by your father. Is this true? Which genes are actually contained in the X and Y chromosomes and does that mean certain genes are more like to be inherited from a particular parent? i.e sons more likely to get the height gene from mothers, daughters from fathers

__________________
A slight inclination of the cranium is as adequate as a spasmodic movement of one optic towards an equinine quadruped utterly devoid of any visionary capacity.