To compare the DNA sequences and analyze the resultant polypeptide chains for mutations, I would need specific examples of the DNA sequences you're referring to. However, I can guide you on how to identify mutations based on the sequences provided.
Here’s how to identify mutations:
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Substitution Mutation: This occurs when one base pair is replaced by another. If the DNA sequence has changed in only one location and this leads to a different amino acid in the polypeptide chain, it's a substitution.
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Insertion Mutation: This involves the addition of one or more nucleotide bases into the DNA sequence. This can cause a frameshift, changing the way the rest of the sequence is read and likely altering the entire polypeptide chain from that point onward.
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Deletion Mutation: This is characterized by the removal of one or more nucleotide bases from the DNA sequence, also potentially causing a frameshift.
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No Mutation: If the DNA sequences are identical or result in the same polypeptide chain, then there is no mutation.
Steps to Determine the Mutation Type:
- Compare the two DNA sequences side by side to identify any discrepancies.
- Check the corresponding amino acid sequences to see how they differ.
- A single change in base pairs that matches a change in a single amino acid indicates a substitution mutation, while changes that shift the entire reading frame suggest insertion or deletion mutations.
If you provide the specific sequences, I can help you analyze them further!