Answer Happy

Cave salamanders (amphibian animals related to frogs) are blind(they have eyes that are not functional). If cave salamandersevolved from ancestors that could see, how can we best describetheir blindness (non-functional eyes)?
a. Non-functional eyes of cave salamanders are a derivedtrait
b. Migration is responsible for this derived trait
c. Migration is responsible for this ancestral trait
d. Functional eyes of salamanders are a derived trait
e. Non-functional eyes of cave salamanders are an ancestraltrait