MCQOPTIONS
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				| 1. | 
                                    The marginal area of the blastoderm in which the cells remain undetached from the yolk is called | 
                            
| A. | primitive groove | 
| B. | zone of junction | 
| C. | area pellucida | 
| D. | area opaca | 
| Answer» C. area pellucida | |