The evolution of initiation of limb development in tetrapods is best explained by
A)a new gene mutation.
B)the co-option of an existing gene for a new function.
C)homoplastic convergence.
D)gene duplication and divergence.
E)conserved genes.

Question

Quizplus · Accepted Answer

The co-option of an existing gene for a new function is the best explanation for the evolution of initiation of limb development in tetrapods, meaning that a gene that originally had a different function was adapted for use in limb development. This is supported by evidence from comparative genomics and developmental biology studies.

The Evolution of Initiation of Limb Development in Tetrapods Is