Final answer:
Identical twins have the exact same DNA print as they develop from the same fertilized egg and inherit the same genes. Siblings, parent and child, and cousins share similar but not identical genetic makeup. The uniqueness of the genetic map in identical twins stems from their origin from a single zygote.
Step-by-step explanation:
The individuals that will have the exact same DNA print are identical twins. Identical twins develop from the same fertilized egg and therefore inherit copies of the same chromosomes, resulting in them having all the same genes. Due to the process known as sexual reproduction, a child's DNA is composed of 50% from the mother's egg and 50% from the father's sperm, making siblings, parent and child, and cousins have similar but not identical genetic makeup.
To establish that a child is related to his/her biological parents, the child's DNA fingerprint must contain identifiable genetic markers from both the mother and the father. In essence, the child's genetic map will reflect a combination of the parents' DNA sequences. While siblings, parent and child, and cousins share some genes and corresponding DNA characteristics due to their familial relationship, it is only the identical twins that possess identical genes.
Identical twins will have the exact same DNA print. This is because identical twins develop from the same fertilized egg and inherit copies of the same chromosomes and genes. Siblings, while genetically similar, do not have identical DNA prints, as they inherit different combinations of genes from their parents. Parent and child pairs share some genes, but again, they do not have identical DNA prints. Cousins, on the other hand, have even less genetic similarity and are even less likely to have the exact same DNA print.