contestada

There is/are _____ cones per gangion cell(s), while there are _____ rod(s) per ganglion cell

Respuesta :

There are three types of cones per gangion cell, while there are one type of rod per ganglion cell. Cones are normally one of the three types, each with different pigment, namely: S-cones, M-cones and L-cones.