Who is more closely related to a newborn?

Question

Who is more closely related to a newborn? A half-brother or half-sister or a maternal grandmother?

Answer 1

that does not make sence. they are all kinda related. But nly if the newborn is their biological half brother or sister. If the grandmother is the biological then she would be "more related" then the half brother, or half sister. but this should not matter.

Answer 2

I would say the maternal grandmother, because although the grandmother is not the infants mother she shares most of its genes. A half brother or sister could only relate the infant by mother, but to be of the same seed (the father) would closely link a newborn. So half doesn't count it is either all or nothing. The baby would be 99.99 % the grandmothers and 1/2 % the step brothers or sisters.

Answer 3

I would say the half brother or sister, since they would have more DNA in common - half would be the same. The grandmother would make up, what, a quarter or an eighth of the newborns DNA? I think some people who have already answered are confusing half-sibling with step-sibling.

Answer 4

Genetically, let's assume that the half-brother and half-sister share a father with the newborn. So, all three kids got half of their genetic makeup from their father.

The mother of the newborn got half of her own genetic material from the grandmother. The newborn then got half of his genetic material from the mother. So the newborn got one half of one half from the grandmother. Half of a half is a quarter.

So the half brother and sister have half of their genetic material in common with the newborn, whereas the grandmother only shares one quarter. So the half-brother and half-sister are more related. From a statistical genetics standpoint, anyway...

Answer 5

The siblings would share between 1/4 and 1/2 genetic material. The grandparent/grandchild would only share none to 1/4 blood-line. The none would occur if the half relationship were through the father instead of the mother. A step grandparent shares no biological link with step grandchildren.

Answer 6

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Answer 7

An odd question, but either of the siblings is only half-removed, where the grandmother is removed by two generations.

Answer 8

gradmother because she is directly realated with the mothe/father of the newborn is obviously the child of the mother/father. the newborn has the grandmothers blood running through its viens!

Answer 9

The grandmother.

Answer 10

Grandma