Your answer would be, Prior to genetic engineering, Humans often used is called Selective Breeding, to gain desired traits in animals, such as dogs.
Hope that helps!!!! ( Answer: Selective Breeding).
A possible explanation of a scientific question based on observation
<span>Well this isn't actually a question but to market to a company like this you first have to impress a small number of people in a single chain of command. Your products don't have to be marketed to a company as a whole or to a single rung of the food chain but to each successive member in a hierarchy in the company. Firstly to the employee, then to their management then to the ones who actually making the decision to buy.</span>
