I would be interesting to know the DNA of eggs. If each is different? Can you take the DNA of an egg and identify itÂ’s owner?
Let me see if I can clarify the whole DNA question a bit. Bear with me if you already know this, because it's apparent that many people on these boards know only some, and others don't know any.
Each cell in a human's body - excepting the reproductive cells (sperm and ova), called gametes - has 23 pairs of chromosomes, for a total of 46. These chromosomes are exactly the same in each and every cell (we are assuming here a normal, healthy human being).
The exceptions, the gametes, don't have paired chromosomes. Instead, they each contain 23 single chromosomes, which are a copy of one or the other half of that parent's pairs. Since, with few exceptions, no one else on Earth is going to have that exact same chromosome, it is possible to match it to a near-certainty (nothing's perfect) to the owner.
Now, when the ovum and a sperm meet and combine, the individual chromosomes of each combine to make the 23 pairs found in a regular human cell. And then they start replicating themselves at a prodigious rate. At the point when those chromosomes join into pairs, a new individual comes into existence, with a unique genetic structure belonging to no one else on Earth (with certain exceptions). That is why pro-lifers keep pointing out that an embryo or fetus is NOT part of his mother's body: because his cells have chromosomes and DNA that hers do not. Thus, they are not the same organism.
If there are any questions on this, or there's any other confusion on this topic I can clear up, let's hear it.