If one were to block expression of the LIN-3 gene in the early development of C. elegans, which of the following would be the most likely result?
A) Cells that would normally differentiate into the optic vesicles would remain epidermis.
B) More cells than normal would differentiate into the optic vesicles.
C) More cells would become anchor cells.
D) Cells that would normally differentiate into vulval precursors would become epidermis.
E) Cells that would normally differentiate into epidermis would become vulval precursors.

Question

If one were to block expression of the LIN-3 gene in the early development of C. elegans, which of the following would be the most likely result?
A) Cells that would normally differentiate into the optic vesicles would remain epidermis.
B) More cells than normal would differentiate into the optic vesicles.
C) More cells would become anchor cells.
D) Cells that would normally differentiate into vulval precursors would become epidermis.
E) Cells that would normally differentiate into epi­dermis would become vulval precursors.

Quizplus · Accepted Answer

LIN-3 is involved in the signaling pathway that induces vulval precursor cell differentiation in C. elegans. Blocking its expression would prevent this differentiation, causing those cells to remain as epidermis.

If One Were to Block Expression of the LIN-3 Gene