TLS Online TPP Program

#Question id: 7700


The legless condition that is observed in several groups of extant reptiles is the result of ________.

#XL - S Microbiology
  1. their common ancestor having been legless
  2. a shared adaptation to an arboreal (living in trees) lifestyle
  3. several instances of the legless condition arising independently of each other
  4. individual lizards adapting to a fossorial (living in burrows) lifestyle during their lifetimes