While Genetic Engineering Gives Humans Potential Control Over Heredity and Evolutionary

While genetic engineering gives humans potential control over heredity and evolutionary processes,there is a key question with respect to the use of genetic engineering?

A) Can these findings on animals be meaningfully applied to humans?
B) Is it moral/ethical to manipulate genetic makeup?
C) Is this research of significant value that we will test these techniques on animals?
D) Does the research show that these techniques actually produce any lasting changes?