The mRNA of the Neurospora gene NMT1
a. catalyzes a reaction involving its own product.
b. base-pairs with other mRNAs to regulate their expression.
c. has two domains; one is a coding sequence and the other is a ribozyme.
d. is only transcribed when the substrate of its product is present.
e. is alternatively spliced depending on the concentration of a metabolite of vitamin B1.
Ans: e
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