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.
Requirements to become a firefighter can vary by country and region, but the majority of stipulations are common to many places. To apply, a prospective firefighter must be at least 17 or 18 years of age, depending on the fire department. Some departments require that applicants are at least 21 and no older than 29.