No, the products of incest.
Hemophilia and all that would be more likely, but no cool identical stuff going on
Depends on the chromosomes, if adam had two identical ones for each the kids would be clones barring mutations.
The chances are around 260k to 1. Factoring Eve’s lack of a second sex chromosome, (unless she has swyer syndrome) the equation would be 1/((22²+1)(23²))≈0.00039%
Seeing how we’re talking about religion and first man, I don’t think we’re limited by probability here.
BTW so there are 30k people with identical chromosomes??