The MRNA for Caudal and Hunchback Are Distributed Evenly Throughout

question 138

Multiple Choice

The mRNA for caudal and hunchback are distributed evenly throughout the Drosophila embryo, yet the Caudal protein is found only in the posterior portion of the embryo and the Hunchback protein is present in greater amounts anteriorly. This distribution is due to:

• A)transcriptional regulation of the hunchback and caudal genes in the zygote.
• B)translational regulation of the hunchback and caudal mRNAs in the zygote.
• C)transcriptional regulation of the nanos and bicoid genes in the zygote.

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