Which of the following is a fundamental characteristic of the Notch pathway?
A) It provides symmetry to plant flowers.
B) It allows mRNAs to accumulate in the posterior portion of the Drosophila embryo.
C) It works through nuclear signals involving the lac operon.
D) It directs mRNAs to antisense systems in the posterior portion of all organisms.
E) It works through direct cell-to-cell contact.
Answer: E
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