MCQOPTIONS
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				| 1. | 
                                    What is the characteristic features of colour-blindness | 
                            
| A. | Absence of rod cells in retina | 
| B. | Absence of cone cells in retina | 
| C. | Absence of lusture in lens | 
| D. | Lack of colour pigments in the Eye | 
| Answer» C. Absence of lusture in lens | |