they did not have A and B group at all so they can only produce a baby with O -ve or +ve
Can O plus mother and B plus father can give A plus son?
The father's blood type can be O, A, or B.
The son is the maternal grandson of the mother of the father.
Your mother's husband is your father. His father-in-law is your mother's father, your grandfather. Your grandfather's son is your mother's brother, and your uncle. Your uncle's daughter is your first cousin.
faternal father
The girl's father-in-law is the father of her spouse, while her spouse's father-in-law is the father of her spouse's spouse. Therefore, the girls's father-in-law is also the son of the boy's father-in-law.
Your step son can be your father if he was previously married to your mother, making him your step father.
The most traditional method by which a father legitimizes his son is to marry the son's mother. It is also possible to formally recognize the son as his own, even without marrying the son's mother.
In Spanish, you say mother as "madre" and son as "hijo."
son
Son
me