Eyes and Optic Tectums Grow at Different Rates

Multiple Choice

Eyes and optic tectums grow at different rates.As they grow,the synaptic connections that were originally formed on the tectum by axons of retinal ganglion cells shift so that the retina is always fully and faithfully mapped on the tectum.This finding supports the

A) chemoaffinity hypothesis.
B) pioneer hypothesis.
C) topographic-gradient hypothesis.
D) all of the above
E) both A and C