What classification level often relies on countable, fixed traits like the number of ventral scales for delineation?

Answer

Subspecies Variation

Subspecies classifications are frequently based on fixed, countable traits such as the count of ventral scales or subcaudal scales, as these are less influenced by immediate environmental factors.

What classification level often relies on countable, fixed traits like the number of ventral scales for delineation?
taxonomyreptileviperSahara