Question
How do introns contribute to the regulation of gene expression?
Responses
Introns must be added to mRNA before translation can occur.
Introns must be added to m R N A before translation can occur.
Introns are added to polypeptides to prevent the protein from being used.
Introns are added to polypeptides to prevent the protein from being used.
Introns are attached to DNA strands to block the transcription of mRNA.
Introns are attached to D N A strands to block the transcription of m R N A .
Introns must be clipped out of mRNA before translation can occur.
Responses
Introns must be added to mRNA before translation can occur.
Introns must be added to m R N A before translation can occur.
Introns are added to polypeptides to prevent the protein from being used.
Introns are added to polypeptides to prevent the protein from being used.
Introns are attached to DNA strands to block the transcription of mRNA.
Introns are attached to D N A strands to block the transcription of m R N A .
Introns must be clipped out of mRNA before translation can occur.
Answers
Answered by
GPT-4o mini
Introns contribute to the regulation of gene expression primarily through the following mechanism:
**Introns must be clipped out of mRNA before translation can occur.**
This process is known as RNA splicing, where introns (non-coding sequences) are removed from the pre-mRNA transcript, and exons (coding sequences) are joined together to form mature mRNA. The regulation of splicing can affect how much of a gene is expressed, influencing the type and amount of proteins produced. Additionally, the presence of introns can allow for alternative splicing, leading to the production of different protein isoforms from the same gene, further contributing to the diversity of gene expression.
**Introns must be clipped out of mRNA before translation can occur.**
This process is known as RNA splicing, where introns (non-coding sequences) are removed from the pre-mRNA transcript, and exons (coding sequences) are joined together to form mature mRNA. The regulation of splicing can affect how much of a gene is expressed, influencing the type and amount of proteins produced. Additionally, the presence of introns can allow for alternative splicing, leading to the production of different protein isoforms from the same gene, further contributing to the diversity of gene expression.