It's very possible.
one is direct the other one isn't
Nothing different than any other children, ancient or modern.
Netbank does not compare so well to other banks in modern times. It is not even ranked among the other top five banks. ING direct, Yorkshire, NatWest, Virgin One, and and First direct are all rated higher.
Blood and other body fluids have direct contact with the tissues in this type of circulation?
No - children do not have to have the same blood type as the parents. For example, if one parent has blood type A and the other has blood type AB, the child might have A, B or AB blood types. (For the child to have B, the parent with blood type A would need to be heterozygous, Ao)
There is 50% that children will be of negative blood type if parents are heterozygous positive. 25% if one parent is homozygous and other heterozygous. 0% if both homozygous.
open circulatory system ;D
No he could however be the father of the type a child
Australopithecus afarensis is not a direct ancestor of modern humans but is an ancestral species that lived around 3-4 million years ago. It is believed to be closely related to the common ancestor of humans and chimpanzees. Other hominid species such as Homo habilis and Homo erectus are considered more direct ancestors to modern humans.
The other parent would have to have blood type O to have a child with that blood type.
* If they were part of a family with children they would be classified as foster children or adopted and become your sibling, but not by blood. Other than this way there is no relationship or no name for the person other than 'good friend of the family.' * Stranger
Most likely as there has been in every other call of duty game.