Final answer:
Mutations can vary in impact, with some being harmful, neutral, or advantageous. Harmful mutations may cause genetic disorders or cancer, while advantageous mutations improve an organism's survival and reproduction chances.
Step-by-step explanation:
Mutations can vary in their impact on an organism. Some mutations are more harmful than others due to their effects on survival and reproduction. Harmful mutations can result in genetic disorders or cancer, while neutral mutations have no effect on an organism's fitness. On the other hand, advantageous mutations increase an individual's chances of survival and reproduction, leading to improved fitness.