-At 18 days after conception, this structure is visible in the developing embryo: the neural
A) groove.
B) tube.
C) plate.
D) floor.
E) crest.

Name: -At 18 days after conception, this structure is visible in the developing embryo: the neural A) groove. B) tube. C) plate. D) floor. E) crest.
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Question

-At 18 days after conception, this structure is visible in the developing embryo: the neural
A) groove. 
B) tube. 
C) plate. 
D) floor. 
E) crest.

Quizplus · Accepted Answer

At 18 days after conception, the neural plate is visible in the developing embryo. It is the earliest stage in the development of the nervous system.

-At 18 Days After Conception, This Structure Is Visible in the Developing