The same amount with both: 50%
You would share up to 6.25%.
Yes, DNA is a characteristic that all living things share. To be more precise, all living things share a form of genetic material, which is DNA.
You would share up to 12.5%. EDIT: NO, that would be a first cousin. A third cousin would share <1%.
One fourth
A person can have a DNA test done to see if someone is their half brother. The DNA would have to be taken from both half brothers and both parents or the parent they both believe is their biological parent.
Cousins would share up to 50% of the DNA.
No, unless they are Identical Twins. Normal siblings will on average share 50 percent of their genetic material, since they get half of their chromosomes from their mother and half from their father.
You would share up to 6.25%.
Yes, DNA is a characteristic that all living things share. To be more precise, all living things share a form of genetic material, which is DNA.
You would share up to 12.5%. EDIT: NO, that would be a first cousin. A third cousin would share <1%.
One fourth
A person can have a DNA test done to see if someone is their half brother. The DNA would have to be taken from both half brothers and both parents or the parent they both believe is their biological parent.
It would not be accurate, but there would be some traces of matching dna.
More than 98%, according to Jonathan Marks Department of Anthropology University of California, Berkeley
No. The baby would not share your DNA.
Physically, no. Though we all share the same DNA, it is just coded slightly differently. Spiritually, some religions claim it to be the case but this is meant as a metaphor more than a physical manifestation.
first cousins CANNOT have the same DNA. siblings share 50% of their DNA, and first cousins share 25%. I'm not sure which test you are refering to, as 99.9% DNA match would infer identical twins.