Suppose that frog embryos are genetically manipulated so that the epidermal cells expressed both E-cadherin and N-cadherin on their cell surface. The neuronal tissue and epidermal tissues are collected from the embryos and treated as illustrated in Figure 10.12b. Which of the following would you predict would happen now that N-cadherin is also present on the surface of the epidermal cells?
A)The genetically modified epidermal cells would adhere to each other and to neuronal cells.
B)The genetically modified epidermal cells would adhere to neuronal cells and would no longer adhere to epidermal cells.
C)The genetically modified epidermal cells would adhere to each other, and not to the neuronal cells, because they would still be epidermal cells regardless of the presence of an additional cell adhesion protein on their surface.

Question

Suppose that frog embryos are genetically manipulated so that the epidermal cells expressed both E-cadherin and N-cadherin on their cell surface. The neuronal tissue and epidermal tissues are collected from the embryos and treated as illustrated in Figure 10.12b. Which of the following would you predict would happen now that N-cadherin is also present on the surface of the epidermal cells? 
A)The genetically modified epidermal cells would adhere to each other and to neuronal cells. 
B)The genetically modified epidermal cells would adhere to neuronal cells and would no longer adhere to epidermal cells. 
C)The genetically modified epidermal cells would adhere to each other, and not to the neuronal cells, because they would still be epidermal cells regardless of the presence of an additional cell adhesion protein on their surface.

Quizplus · Accepted Answer

With the presence of both E-cadherin and N-cadherin on the surface of the epidermal cells, they are likely to adhere to each other as well as the neuronal cells since N-cadherin plays a role in neuronal cell adhesion. Therefore, the genetically modified epidermal cells would adhere to each other and to neuronal cells.

Suppose That Frog Embryos Are Genetically Manipulated So That the Epidermal