Mismatches between the strands of DNA are one of the major targets for excision repair systems. Mismatch repair (MMR) is accomplished by scrutinizing DNA for apposed bases that do not pair properly

TLS Online TPP Program

#Id: 1173

#Unit 7. System Physiology – Animal

There are two types of photoreceptors:

Rods 

Cones

TLS Online TPP Program

#Id: 1174

#Unit 7. System Physiology – Animal

Rods 

• Have low acuity or resolution

• are sensitive to low-intensity light

• receptors for night vision (scotopic vision)

TLS Online TPP Program

#Id: 1175

#Unit 7. System Physiology – Animal

Cones 

• Higher visual acuity

• responsible for vision in bright light (photopic vision) Participate in color vision

TLS Online TPP Program

#Id: 1176

#Unit 7. System Physiology – Animal

Inputs from eye to CNS: 

• Input from the rods 

• Input from the cones

TLS Online TPP Program

#Id: 1177

#Unit 7. System Physiology – Animal

Duplicity Theory 

The existence of these two kinds of input, each working maximally under different conditions of illumination

TLS Online TPP Program

#Id: 1178

#Unit 7. System Physiology – Animal

Axons of retinal ganglion cells 

Received and transduced information and carried to the CNS