I just did it and got it correct the answer is inside the circle which is the first one. Good luck on the questions.
1) Mutations are caused by changes in nucleotide bases. these altered base formed different amino acid depending upon nucleotide base sequence that code specific amino acid. ... even though some mutations, can have a more effect on amino acid coding, which can affect what kind of proteins are produced.
your welcome :)
The high heat capacity of water prevents fish body temperatures from changing during the winter.