Final answer:
The statement is true; the chain of custody must be updated whenever evidence is handled to maintain its integrity. For DNA fingerprinting, the child's profile must match a combination of genetic markers from both parents to establish a biological relationship.
Step-by-step explanation:
True: The chain of custody must be updated every time someone handles a piece of evidence. The chain of custody is a crucial aspect of legal investigations, ensuring that the integrity of the evidence is maintained throughout the investigative process. If unaccounted for, evidence can be tainted or challenged in court, affecting its admissibility and the outcome of the case.
In regards to the DNA fingerprint, for a child to be established as related to a particular mother and father, the child's DNA fingerprint must contain a mix of genetic markers from both parents. Each parent contributes half of these genetic markers, known as alleles, to their offspring. Therefore, if the genetic profile matches the combination of both the mother's and father's alleles, it strongly supports the biological relationship between the child and the parents.