Social relationships can improve or harm health...Improve is first : you can get to learn new things that can help you in life that would make your social relationship better like how you speak to someone. Now here is harm health : first you can get stress out from things that's is going on between you and your peer
No because it would look like ww to ww. So if you took a w from each parent the offspring would be ww/ have black wool. Say one parent had white wool that the offspring would be Ww so it is more likely to have white wool. Hope this helps