How many chromosomes does a human have? and how is a baby's gender determined? (example: for the baby to be a boy, it would need what kind of chromosome? for it to be a girl, what chromosome would be needed? )

A human has 46 chromosome pairs. For a baby to be a boy its needs to have a xy chromosome and for it to be a girl it has to be xx. 

Humans have a total of 46 chromosomes or 23 pairs. A baby's gender is determined by its x and y chromosomes if its double x then it's a female if its an x and a y it's a male. The father determines all this since he's the one that holds the y.

La olla es de metal por que se calienta mas rápido, y las manijas son de madera por que así no se calientas y tienden a estar mas frías.