Final answer:
Biochemical evidence for evolution shows that closer related species have more similarities in DNA, RNA, and proteins, which reflects a more recent common ancestor.
Step-by-step explanation:
The general pattern of biochemical evidence for evolution is that the more closely related two species are, the more biochemical similarities in DNA, RNA, and proteins they have. This is because related species share a more recent common ancestor and thus have accumulated fewer differences in their biochemical sequences. This evidence is derived from techniques such as using molecular clocks to estimate the time since species diverged by comparing DNA or amino acid sequences, with fewer differences indicating less time since divergence.