Suppose that a mutation occurs in the middle of a large...

Name: Problem 28, Chapter 14: Genetics: A Conceptual Approach
Uploaded: 2021-10-12T21:42:24-08:00
Duration: 1 min 54 s
Channel: Josee Pacheco
Description: Suppose that a mutation occurs in the middle of a large intron of a gene encoding a protein. What will the most likely effect of the mutation be on the amino acid sequence of that protein? Explain your answer.

Suppose that a mutation occurs in the middle of a large intron of a gene encoding a protein. What will the most likely effect of the mutation be on the amino acid sequence of that protein? Explain your answer.

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Key Concepts

Silent Mutation

A silent mutation is one that does not result in a change in the amino acid sequence of a protein. In the context of a mutation occurring in an intron, such a mutation is usually silent because the intron is removed from the mRNA before translation, meaning no change is introduced to the final protein sequence.

RNA Splicing

RNA splicing is the process by which the non-coding introns are removed from the pre-mRNA transcript and the exons are joined together to form the mature mRNA. This process ensures that only the coding sequences are translated into protein. Mutations in the middle of an intron are unlikely to affect the splicing process if they do not disrupt essential splicing signals.

Introns

Introns are non-coding sequences interspersed within the coding regions (exons) of eukaryotic genes. They are transcribed into the pre-mRNA but are removed during RNA processing, meaning that mutations that occur within the introns typically do not affect the final protein product unless they interfere with regulatory sequences involved in the splicing process.

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