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A reasonable explanation for the change in levels of protein is that the mutation occurs within a few hundred base pairs of the transcriptional start site, in the gene's promoter.
An area where the RNA polymerase first binds and initiates transcription is known as a promoter in the field of genetics. Near the gene that needs to be transcribed, the promoter is typically present. The promoter region also regulates how quickly DNA is transcribed. The amino acid sequence or molecular weight was unaffected by the mutation. It follows that the gene's coding region does not likely contain the mutation.
For these reasons drosophila's eye color was affected due to mutation and the protein part is less affected since having coding regions. The gene regulatory region, such as the promoter region, is where the mutation is most likely to be found. The amount of mRNA and protein produced would be reduced as a result of this mutation's interference with transcription initiation.
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A mutation in a gene in the fruit fly drosophila was found to affect eye color. The protein affected was found to be completely normal in its molecular weight and an amino acid sequence, although much less of the protein is made in mutant flies. A reasonable explanation for the change in levels of protein is that the mutation_____________.
