If the DNA codons are ATG ATG ATG and a cytosine base is inserted in the beginning, which of the following will result?
Correct answer: A. CAT GAT GATG
- A. CAT GAT GATG
- B. A nonsense mutation
- C. ATG ATG ATG
- D. CA TGA TGA TG
Explanation
A nonsense mutation is a mutation which interconverts a nonsense codon to or from a sense-coding triplet, resulting in an abnormally shortened or elongated polypeptide chain. But in this example, cytosine is added at the beginning, so CAT GAT GATG will result.
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Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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