Yet, Dr. Bancroft added, "Whether he was wrong about physiological similarities remains an open question."

Thousands of non-human primates are used around the world in research because of their psychological and physiological similarity to humans.

For this reason, they have physiological and ecological similarities.

"Such a scan might be feasible at close range," said Spock, choosing his words carefully, "but from orbit, given the physiological similarities between humans and Nadorians, it is quite impractical."

Mrs. Gill-Robinson chose piglets as human substitutes for her experiment, a common practice in medical research because of their biochemical and physiological similarities to humans.

If so, this is remarkable: nothing about a chimpanzee's vocal apparatus suggests a digital keyboard, notwithstanding the anatomical and physiological similarities.

For all we know, the physiological similarities between the two Daxes could make it even harder for Jadzia to adjust to the psychological differences.

The physiological similarities between the worker and queen castes have led to experiments attempting to distinguish the characteristics of these two castes and how they are determined.

Comparing fossil plants and leaves to modern analogs enables inferences about the climate to be made based on physiological and morphological similarities.

The physiological similarities between humans and other animals, especially primates, have led to more comparative research between the two groups.