Punnet square with brown eyes and blue eyes

What happens when the cell copies its chromosomes

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.