Often only small amounts of DNA are found at a crime scene. Which technique uses an enzyme to replicate DNA regions from a small sample of DNA for use in DNA fingerprinting?

Polymerase chain reaction(PCR)

Explanation:

PCR is used to replicate the DNA into bigger amount until it is enough to be analyzed by different methods

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i'd say that the moon rock is about 2.2 billion years old.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands