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Scientists applied a treatment of nucleotide RNA fragments to Drosophila eggs that were complementary to bicoid mRNA.

The fragments bonded with the bicoid mRNA molecules and blocked them from being transcribed. The resulting larva had bodies with no anterior parts but rather with posterior parts at both ends.

The results of this experiment suggest that the protein products of the bicoid gene

A

are necessary for fertilization.

B

are needed for the successful formation of head structures during development.

C

are found in the cells of fully differentiated head structures.

D

are important for the process of apoptosis during development.

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