Mutations-+wehre+and+why+do+they+occur?

X CHROMOSOME
 * Jeffery's mutation occured in X chromosome
 * Andrew, you have one X chromosome and Y chromosome
 * Susan, you have 2 X chromosomes
 * Jeffery got hemophilia when either the X chromosome in Susan OR Andrew was mutated
 * Jeffery had a much higher chance of getting Hemophilia because its easier for 1 X chromosome in the man to get mutated then 2 X chromosomes in the women.