A child's sex is determined upon fertilization, when the female provides the X chromosome and the male provides _____. either the X or Y chromosome. From the following choices, select the type of inheritance in which multiple gene pairs combine to produce a particular trait.
1. To be a firefighter, you usually need a high school diploma and a college program in fire protection technology or a related program. You must pass physical agility, strength, fitness, and vision requirements. Previous experience as a volunteer firefighter may also be an advantage. 2.
â If you are very dedicated, undergo your fire training and EMT training in parallel to each other, and get accepted by the fire department on your first attempt, it will take you 3 to 3.5 years to become a firefighter (though you will be a probationary firefighter after 2.5 â 3 years).