Indicate whether each of the following descriptions better applies to these poles established in an early embryo: anterior (A), posterior (P), dorsal (D), ventral (V), animal (N), or vegetal (G). Your answer would be a six-letter string composed of letters A, D, G, N, P, and V only, e.g. ADGPVN.
( ) It defines the part to become internalized in gastrulation.
( ) It defines the parts to remain external.
( ) It defines the location of the future head.
( ) It defines the location of the future tail.
( ) It defines the location of the future belly.
( ) It defines the location of the future back.

Question

Indicate whether each of the following descriptions better applies to these poles established in an early embryo: anterior (A), posterior (P), dorsal (D), ventral (V), animal (N), or vegetal (G). Your answer would be a six-letter string composed of letters A, D, G, N, P, and V only, e.g. ADGPVN.
( )	It defines the part to become internalized in gastrulation.
( )	It defines the parts to remain external.
( )	It defines the location of the future head.
( )	It defines the location of the future tail.
( )	It defines the location of the future belly.
( ) It defines the location of the future back.

Quizplus · Accepted Answer

Three axes generally have to be established in the early embryo. In most animals, the animal-vegetal (A-V) axis defines which parts are to remain external in gastrulation and which are to become internalized. The anteroposterior (A-P) axis specifies the locations of the future head and tail. The dorsoventral (D-V) axis specifies the future back and belly.

Indicate Whether Each of the Following Descriptions Better Applies to These