Answer/Explanation:
Pros
1 ) Qualities that benefit the species can be chosen to be passed on to the offspring.
2 ) When more of the animals (humans included) will have less competition if their mate is predetermined.
Cons
1 ) If certain traits are preferred and passed on selectively, the genetic diversity of the group will suffer.
2 ) We were made from Darwinian evolution, a natural evolution, so is it right to take that into our own hands and play god.