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  #1  
Old 08-02-2010
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Zygote fusion of the paired dorsal aortae

Which of the following processes is responsible for fusion of the paired dorsal aortae?
A. Lateral folding
B. Craniocaudal folding
C. Gastrulation
D. Neurulation
E. Looping of the heart tube
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  #2  
Old 08-03-2010
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i think the and is B. THE VENTRAL segmental branch fold craniocaudally
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  #3  
Old 11-21-2011
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i am not sure it could be E
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