it makes sense
Yes.
They have the same mother and different fathers.
Nothing really. There is no blood relationship between the two.
A half-brother (or half-sister) is one with whom you share only one parent, i.e. you have the same mother but different fathers or the same father but different mothers.
Sid is Tom Sawyer's half brother because they share one parent in common - their mother. They have different fathers, which makes them half siblings.
Because the children have the same mother but different fathers, they are half-siblings (half brothers or half sisters, depending on their sex). But because their different fathers are brothers, they are also first cousins, and each child's father is uncle to the other child. Both relationships apply at the same time, but it is usually easier to use the closest of the possible relationships, so they will usually be thought of as half-siblings.
Not full brother and sister, but in sharing the same blood line ofthe mother, you are considered to be related by half of the parentage, in this case, on the mother's side. Whether one becomes full brother/sister is a matter of love,compassion, acceptance, and the half factor becomes a matter only of legality. You are half brother and sister. You share your mothers blood but not your fathers.
A stepsister is one where there are no blood ties, only related by marriage. If you are both a natural child of one of the parents then it would make you half sisters. Same mother, different fathers. Same father, different mothers.
Your half-brothers and half-sisters (half-siblings) are called half because instead of having the same mother and the same father as you, you have only one parent in common. Thus, you have half the common parentage that full siblings have. Half-siblings have the same father and different mothers, or the saem mother and different fathers.
Barack Obama has no full brothers or sisters but he does have half brothers and sister and there names areMalik Obama (half brother b.1958)Auma Obama (half sister b. 1960)Abo Obama (maybe adopted brother b.1968)Bernard Obama (maybe adopted brother b.1970)Mark Ndesandjo (half brother fathers third wife's child b.1965)David Ndesandjo (half brother fathers third wife's child b.1967-1987)
Your brother's father isyour father, unless you are half-brothers. In that case, your brother's father might be your stepfather
If it is in the same menstrual cycle, it is called superfecundation. If it is later in the pregnancy it is called superfetation. They would still be fraternal twins even with different fathers (that is, half-siblings). This is known as heteropaternal superfecundation. More unusual are "semi-identical twins". These "half-identical twins" are hypothesized to occur when an unfertilized egg cleaves into two identical attached ova and which are viable for fertilization. Both cloned ova are then fertilized by different sperm and the coalesced eggs undergo further cell duplications developing as a chimeric blastomere. If this blastomere then undergoes a twinning event, two embryos will be formed, each of which have different paternal genes and identical maternal genes. More interesting is what the mother of these types of twins would be called.