In general, the adaptive significance of cystidia is not well understood.

In biology, fins can have an adaptive significance as sexual ornaments.

The adaptive significance of rhynchokinesis in certain non-probing birds is not yet known.

The original adaptive significance of milk secretions may have been nutrition or immunological protection.

A great deal of discussion has focused on the adaptive significance of these societal structures.

The adaptive significance, if any, of male superiority in spatial navigation, has recently been questioned.

The adaptive significance of the skull dome has been heavily debated.

Human ethology focuses on the evolutionary and adaptive significance of human behavior.

Fins can have an adaptive significance as sexual ornaments.

The adaptive significance of TSD is currently not well understood.