Best Answer: Your genotype determines your blood type before your born. There are three alleles or versions of the blood type gene: A, B, and O. Since everybody has two copies of these genes, there are six possible combinations; AA, BB, OO, AB, AO, and BO.h is not passed down from parents. With your parents having AB and O, you can only have type A or type B blood because O is recessive. You could have type O if your mother was AO or BO, but she isn't. Since you have type A, your blood is AO (A from your mother and O from your father... but A is dominant).
Rating Newest Oldest. Best Answer: Officially, the third week of September when Fall starts all over the U.S at the autumnal equinox - this year it is September 22nd. And you can find this answer easily through many other methods, like simply googling when does fall start.. You'd be surprised how google search can answer questions.
When does fall start in Alabama? Officially, the first day of fall is the Autumnal Equinox on September 23. However, the end of summer is considered to be the day after Labor Day, which is the last summer hâ¦oliday. Autumn leaves in the deep south usually begin in late October to early November. 4 people found this useful.