a dark-skinned woman, whose parents and grandparents all had very dark skin, marries a light-skinned man, whose parents and grandparents were all very light-skinned. what is the probable skin tone of their offspring?a dark-skinned woman, whose parents and grandparents all had very dark skin, marries a light-skinned man, whose parents and grandparents were all very light-skinned. what is the probable skin tone of their offspring?