It is c. Find phenotypic ratio
They are thought to have separate paths of evolutionary development.
They developed along different evolutionary paths.
They had independent evolutionary development.
In Biology, Ethics explores the morality and problems connected to the uncertain sittuations. An example could be genetics. Some people are unsure of how should we treat genetically modified organisms, is it good or bad to modify them.
Another example could be cloning. There are many people who find cloning of living organisms unethical.