No
Yes
No
Yes
Yes
Yes
America
Yes
Yes, Mae Jemison likely had grandparents. Like most individuals, she would have had maternal and paternal grandparents.
Teacher
Most people have four grandparents, eight great grandparents,16 great great grandparents and 32 great great grandparents. If one set of your great grandparents were first cousins, then then shared one set of their own grandparents. Then you have 30 instead of 32 great great grandparents.
Heart disease, according to the CDC.
Grandparents might not cosign a loan because they might not trust a grandchild or the grandparents might not think they will have the income. Sometimes grandparents simply do not like to cosign loans. Ask the grandparents. Most grandparents will give an explanation.