Describe the difference between the retina’s two photoreceptor cells.

There are difference between the rods and cone based on location, function, size and number.

Explanation:

The two photo-receptor cells of retina are - Rods and cones

The basic differences between a rod and cone  are as follows

Location - Rod lies at the outer edges of the retina while cones lie in the fovea of the retina.

function - Rods produce visions in condition of low/dimlights while cones produce visions in bright lights. They are also responsible for color vision

Size - Rods are longer than the cone cells

Number - There are more number of rod cells than cone cells.  

dna damages cause changes in the structure of the genetic material and prevents the replication mechanism from functioning and performing properly. dna damage and mutation have different biological consequences. while most dna damages can undergo dna repair, such repair is not 100% efficient.

a polymer is a chainlike molecule made up of small molecular units. these small molecular units are called monomers. monomers of polymer can be joined together either naturally or synthetically.