FreeMCATPrep Logo

Support us and cryptocurrency!
Try a browser that's faster, safer, ad-free, and earns you cryptocurrency for using it! W3Schools


More Than 475 Free MCAT Questions with Detailed Answers!

Click HERE for your Random Question from our MCAT Question A Day Archive


MCAT Question A Day - 3/2/14

Point mutations are changes in a single DNA nucleotide base pair. An addition results in an extra base pair, while a deletion results in an omitted base pair along the DNA molecule. In contrast, a substitution results in an incorrect bas pair replacing the correct one. Which point mutations have the highest probability of causing drastic results?

A.  Substitutions
B.  Deletions
C.  Additions and deletions
D.  All three have equal chances of causing drastic results

Click Here for the solution

Want more questions? - Click here to check out our MCAT Question A Day archive