Which of the following mutations does NOT lead to a change in the amino acid sequence of the gene product? Strain 2 Strain 1 A -> B -> C -> D -> E ->
Added by Ivan H.
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There are several types of mutations that can occur in a gene, including: - Missense mutations: These change one amino acid in the protein sequence. - Nonsense mutations: These create a premature stop codon, leading to a truncated protein. - Silent mutations: Show more…
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a. Translocation b. Polyploidy c. Aneuploidy d. Euploidy e. None of these How might a base pair substitution in DNA not result in mutation? a. It may not result in a changed amino acid due to degeneracy in the code b. The changed amino acid may not be essential to the functioning of the protein c. The coding frame in the message is not changed d. All of these e. Only b and c In the three-point test cross, the two most frequent crosses represent a. Double crossovers b. Non-crossovers c. Single crossovers d. A and b e. None of these A crossover frequency between gene A and gene B of 5% means a. There is a centimorgan value of 0.05 b. 5 out of 100 products of meiosis are recombinant c. The map unit between A and B is 0.95 d. A and b e. None of these A frameshift mutation a. Alters the reading frame of a gene b. Changes an amino acid sequence c. Alters the location of a centromere d. A and b e. B and c Triticum, the wheat genus, has a series of haploid chromosome numbers, indicated by 5, 10, and 20. What term describes this series of chromosome numbers? a. Autopolyploidy b. Aneuploidy c. Allopolyploidy d. B and c e. None of these
Sri K.
Examine the Figure below: The letters A to D represent a mutation in the DNA sequence. Specifically, they represent a deletion of 2 nucleotides in the DNA sequence. Which of the mutations (A-D) will likely affect the final polypeptide (could affect abundance and/or amino acid sequence and/or function)? Select all correct answers:
Sana R.
A nonsense mutation (a) causes one amino acid to be substituted for another in a polypeptide chain (b) results from the deletion of one or two bases, leading to a shift in the reading frame $(c)$ results from the insertion of one or two bases, leading to a shift in the reading frame (d) results from the insertion of a transposition (e) usually results in the formation of an abnormally short polypeptide chain
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