What would happen if a cell transcribed and translated a gene’s intron by mistake?(1 point)
Responses
Additional amino acids would be inserted into the chain.
Additional amino acids would be inserted into the chain.
Errors in the protein folding would be repaired.
Errors in the protein folding would be repaired.
The DNA would remain the same as before.
The DNA would remain the same as before.
The intron would begin to duplicate itself.
Additional amino acids would be inserted into the chain.
In prokaryotic cells, repressor proteins bind to a section of DNA called a/an(1 point)
Responses
promoter.
promoter.
chromatin.
chromatin.
operator.
operator.
repressor.
operator.
If a cell mistakenly transcribes and translates a gene's intron, several things could potentially happen. However, it is important to note that in normal cellular processes, introns are removed or spliced out of the pre-mRNA molecule before translation occurs.
1. Additional amino acids would be inserted into the chain: In normal gene expression, the exons (the coding regions) of a gene are transcribed and translated to produce a functional protein. If an intron is mistakenly transcribed and translated, it would result in the inclusion of additional amino acids that do not belong in the protein sequence. This can disrupt the structure and function of the protein, potentially rendering it non-functional or altering its properties.
2. Errors in protein folding would be repaired: Protein folding is a complex process that determines the three-dimensional structure and function of a protein. If an intron is included in the protein sequence, it may interfere with the correct folding process, leading to misfolding or aggregation of the protein. In some cases, cellular machinery like chaperone proteins can help identify and repair misfolded proteins, but it is not guaranteed that all errors in protein folding can be corrected.
3. The DNA would remain the same as before: The DNA itself would not be altered by the transcription and translation of an intron. DNA serves as the template for transcription, and the original gene sequence remains unchanged. However, the resulting protein product may be different due to the inclusion of the intronic sequence.
4. The intron would begin to duplicate itself: This option is not likely to occur as a direct result of transcribing and translating an intron. Intron duplication is a genetic mutation that can occur over long periods of time through processes like gene duplication and transposition. It involves the insertion of an intron or a portion of an intron into another location within the genome. However, it is important to note that intron duplication is not a direct consequence of a single transcription and translation event.
In conclusion, the most likely outcome if a cell transcribes and translates a gene's intron by mistake is that the resulting protein would contain additional amino acids, potentially leading to functional disruption or altered properties.