I need help with part of this bioligy quiz! please help me!!
Question 14 (2 points)
What causes mutations?

Question 14 options:

Mistakes in replication or environmental substances.


An organsim's need for a more advantageous trait


DNA getting tired.


A need for superpowers in the population

Question 15 (2 points)
Using your knowledge of the different types of mutations, which type would be the most severe?

Question 15 options:

point mutations


substitution mutations


frameshift mutations


mutations where A's are replaced with T's