Explain, using an example, how it is possible for a mutation to be harmful in some circumstances but beneficial for in others.

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.

What pattern of migration do whales follow?

Which event would lead to primary succession of a forest?