What changes in the central region of the dorsal surface of the single-celled epithelial layer of a chick embryo lead to the formation of the primitive nervous system? (Select all correct responses)
A)a reduction in the expression of E-cadherin genes
B)a reduction in the expression of N-cadherin genes
C)an elevation in the expression of N-cadherin genes
D)an elevation in the expression of E-cadherin genes

Question

Quizplus · Accepted Answer

A reduction in the expression of E-cadherin genes and an elevation in the expression of N-cadherin genes are key changes in the central region of the dorsal surface of the single-celled epithelial layer of a chick embryo that lead to the formation of the primitive nervous system. This process involves a switch in cadherin types, which is crucial for the cells in this region to change their adhesion properties and behaviors, facilitating the formation of the neural tube, the precursor to the nervous system.

What Changes in the Central Region of the Dorsal Surface