Assuming there's no question the babies are identical twins then, no. A paternity test on one will answer the question. However if they are fraternal twins (not identical) then, yes, each must be tested.
The process for conducting a paternity test for twins involves collecting DNA samples from the twins and the potential father. These samples are then analyzed to determine the genetic similarities and differences between the twins and the potential father, which can help establish paternity. The results of the test can provide conclusive evidence of whether the potential father is the biological father of the twins.
There is no such thing as "semi-identical" twins. If fraternal twins each take a paternity test, only the real father would show up as the father.
The process for conducting a prenatal paternity test for twins involves collecting DNA samples from the twins and the potential father through a non-invasive procedure, such as a blood test or cheek swab. The samples are then analyzed in a laboratory to determine the genetic relationship between the twins and the potential father. This test can be done as early as 9 weeks into the pregnancy.
Paternity test can be performed with newborn baby and even it can be done on unborn babies through mother's amniotic fluid but its risky process.
Identical twins will have the same father, so a paternity test is done just like for any kid. With fraternal twins, it is possible, but very, very rare, to have different fathers for the babies.
Nope...not unless the uncle and father are identical twins.
Yes, a paternity test can be conducted both before and after pregnancy and will involve one of several different procedural options for each.
A paternity test can determine if there is a parent-child relationship between two people. A paternity test would give genetic proof of that relationship.
see link below "Can you have a paternity test while you are pregnant?"
Test can do online
There are several options for a paternity test. You can try www.gtldna.net for a home test.
There is no 'score' on a paternity test. the man is either NOT the father or he could be.