Final answer:
Humans are closely related to chimpanzees in the Linnaean taxonomy because of their common ancestry and similarities in embryonic development and genetic composition.
Step-by-step explanation:
In the Linnaean taxonomy, humans are known to be closely related to chimpanzees because they share a common ancestry.
Through the study of embryology, it has been observed that humans and chimpanzees have similar embryonic development, indicating a shared evolutionary history.
Additionally, modern technology allows scientists to directly compare the genes of different species. Humans and chimpanzees share about 98% of their genes, providing further evidence of their close relationship and common ancestry.