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.
The four seasons start and end when. Spring starts on the 21st of March and ends on the 21st of June. Winter starts on the 23rd of December and ends on the 21st of February. Summer starts on June 21st and ends on September 23 rd.Fall /autumn starts on September 23rd and it ends on 23rd of December. This passage or cheap piece of writing was written by the all Famous Eihab Alnajjar.inter starts on the 23rd of December and ends on the 21st of February. Summer starts on June 21st and ends on September 23 rd. Fall /autumn starts on September 23rd and it ends on 23rd of December.