What are common mistakes students make with neurulation?

Neurulation varies depending on the /organism of focus.
Key terms:
-lecith: pertaining to the “yolk”
micro: small
meso: moderate
macro: large
Microlecithal: For example, an amphioxus embryo undergoes neurulation as a step on it’s own – nothing else is happening except for the neurulation.
Mesolecithal: For example, a frog embryo undergoes neurulation after gastrulation as a process on its own. Nothing else is going on EXCEPT the neurulation.

(http://crescentok.com/staff/jaskew/isr/botzo/chordate1(dot)jpg)
Macrolecithal: For example, a chick embryo undergoes neurulation at the same time as gastrulation is occuring at different positions at the embryo.

(http://www.mun.ca/biology/desmid/brian/BIOL3530/DEVO_03/ch03f16(dot)jpg)

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