Question

what would happen if a cell transcribed and translated a genes intron by mistake? (1 point)
additional amino acids would be inserted into the chain.
errors in the protein folding would be repaired.
the dna would remain the same as before.
the intron would begin to duplicate itself.

Explanation:

Introns are non - coding regions in a gene. During normal mRNA processing, introns are removed. If an intron is transcribed and translated, its nucleotide sequence (which is not part of the normal coding sequence for the protein) will be read as a codon sequence. Since codons code for amino acids, this will lead to the insertion of additional amino acids into the protein chain.

• Option 2: There is no indication that errors in protein folding would be repaired. The main issue is the incorrect inclusion of intron - derived amino acids, not a repair mechanism for folding.
• Option 3: While the DNA sequence itself (the gene) would remain the same (as the error is in transcription/translation processing, not in the DNA sequence alteration), this option does not address the consequence of transcribing/translating the intron. The question is about the result of that incorrect process, not about the DNA sequence stability.
• Option 4: There is no biological mechanism described here that would cause the intron to duplicate itself as a result of being transcribed and translated.

Answer:

Additional amino acids would be inserted into the chain.