Mutation question answers for TB9 pg. 145

 1. It is important to protect the black Kermode bears, because black bears can carry the mutation gene for the Spirit bear.

     2. a) G is substituting for the C

         b) A is missing at the end of the sequence

         c) There is an extra G in the sequence

     3.   Positive, neutral and negative mutations.

     4.   For a whale, instead of having a blow whole on its face (nose) from a long time ago, now it has it on the top of its head. The whale adapted to its environment over time.

     5.   The mutation is bad. The cell is half of what it was before. It is a negative mutation.

     6.   Because having black or white fur does not affect the bear.

     7.   It could be a neutral or a negative mutation. For example, you have a hand, and a certain letter was taken away from the sequence of the protein, the hand won’t work.

     8.   The purpose is to replace a defective gene with a copy of the same gene to attempt to restore function.