Question

in terms of tetrapod evolution, which of these characteristics are ancestral, and which of them refer to new traits found in descendant species? ancestral drag appropriate answer(s) here limbs with digits neck scales fins descendant drag appropriate answer(s) here

Explanation:

Ancestral traits are older, present in early - forms. Descendant traits evolved later. Scales and fins are ancestral in tetrapod evolution. Limbs with digits and neck are descendant traits.

Answer:

Ancestral: scales, fins
Descendant: limbs with digits, neck