0
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.
What else can I help you with?
Who would you consider more of a biological brother and sister children that are born from the same mother different father or children from the same father different mother?
Since the father and mother each contribute half (23 chromosomes) of the genetic material needed to form a child (46 chromosomes), the brother and sister are equal in terms of biological similarity, no matter if they had a different mother (same father) or father (same mother). However, if any of the father/mother pairs are related, the result is skewed.
What relationship to you is your mother's brother's father?
If your mother and her brother share the same parents, then her brother's father would be considered your grandfather
What is a half brother?
Your maternal half-brother is a brother who has the same mother as you but not the same father.
Is your great grandmother's half brother related to me?
A half brother means that they either had the same father or mother as the rest of the siblings, but a different father or mother making them a half brother. You Grandmother's half brother would be your great uncle.
Same mother but different fathers and my father's brother is what to my half brother?
Nothing really. There is no blood relationship between the two.
What is a maternal half-brother?
Your maternal half-brother is a brother who has the same mother as you but not the same father.
What is a brother who has the same mother and a different father but was adopted by your father?
He is still technically your half-brother. But if you get along well, why would it ever matter? It is much easier not to differentiate and to call him your brother
What does brother mean?
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.
How do you call a boy who has the same mother and father as you?
Brother -_-
What relation to you is your brother's father?
In most cases, your brother's father is also your father. If your brother is actually your half-brother, and you have the same mother, then your brother's father is either your stepfather or is not related to you at all.
Are agnate and uterine real brother and sister?
agnate sibling: are the one that share the same father but not the same mother uterine sibling: are the one that share the same mother but not the same father i think that agnate slibling are far part brother nd sister blood b/c they dont share the same mother cause if you share the same mother then you close brother nd sister but dont share same father. uterine slibling are close blood brother nd sister b/c they share the same mother not the same father if you dont share the same mother but the same father then that not close brother nd sister.. so the best half sibling are the uterine sibling sharing same mother not the same father. by. Johnny Garcia
If a brother and sister have the same mother but different father are they step brother and sister?
No here they are still brother and sister, but they do have a stepfather.
