Not all Israelis are blood-type O, but there are certainly some who are.
On the contrary, bloodtype AB is not rare. Bloodtype AB is a great blood type since it can recieve blood from both bloodtypes A and B. The rarest bloodtype there is, is bloodtype O.
a+, a-, b+, b-, o+, o-, ab+, ab-
They cannot receive bloodtypes AB or B. They can receive bloodtypes A and O.
If both parents are O- then the child will be O-.
O positive or O negative.
It depends on the genotype of the parents: If they are AO and AO the child could be all of the 2 Bloodtypes: AO (= bloodtype A) OO (= bloodtype O) If they are AA and AA the child could only be bloodtype A The answer in short: yes!
Yes, bloodtype is not directly hereditary.
O negative can be given to a person with any bloodtype, but if possible it is better for a person requiring transfusion to be given blood matching their own bloodtype.
If both parents are type O, they will always produce type O offspring.
Dad can be Ai or Aa (where i represents the recessive gene). In order for a child to be O, he or she has to have neither A nor B allelles. So Mom could be Ai (bloodtype A), Bi(bloodtype B), or Ii (Bloodtype O).
It's their bloodtype, if they ever need blood in a battlezone, medics etc. can easily see what bloodtype they can administer.
If you're asking if a person with bloodtype 0+ and a person with a+ have sex and can get pregnant, then the answer is yes.