The genetic code is based on each amino acid being coded for...

The genetic code is based on each amino acid being coded for by a distinctive series of three nucleic acid bases called a codon. The following is a short segment of DNA using the slash symbol $(/)$ to separate the codons for easy viewing: ATC/GTT/GAA/CTG/TAG/GAT/AAA ATC/GTT/GTA/CTG/TAG/GAT/AAA What kind of change has occurred? a. $A$ substitution of $\mathrm{T}$ for $\mathrm{A},$ changing the coding for the third codon b. An addition of $\mathrm{C}$ for $\mathrm{G},$ lengthening the strand and changing every codon past the addition c. A deletion of an $\mathrm{A},$ resulting in a shortening and changing every codon past the detion d. $\mathrm{Nochange}$ has occurred; the same one base was replaced with the same one

The genetic code is based on each amino acid being coded for by a distinctive series of three nucleic acid bases called a codon. The following is a short segment of DNA using the slash symbol $(/)$ to separate the codons for easy viewing: ATC/GTT/GAA/CTG/TAG/GAT/AAA ATC/GTT/GTA/CTG/TAG/GAT/AAA What kind of change has occurred?
a. $A$ substitution of $\mathrm{T}$ for $\mathrm{A},$ changing the coding for the third codon
b. An addition of $\mathrm{C}$ for $\mathrm{G},$ lengthening the strand and changing every codon past the addition
c. A deletion of an $\mathrm{A},$ resulting in a shortening and changing every codon past the detion
d. $\mathrm{Nochange}$ has occurred; the same one base was replaced with the same one

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Key Concepts

Substitution Mutation

A substitution mutation is a type of point mutation where one nucleotide base is replaced by another. This can change the identity of the codon, potentially altering the amino acid sequence of the protein, which may affect the protein's structure and function.

Genetic Code

The genetic code is the set of rules by which information encoded within genetic material (DNA or RNA) is translated into proteins by living cells. It specifies the correspondence between the nucleotide triplets, known as codons, and amino acids, which form the building blocks of proteins.

Codon

A codon is a sequence of three nucleotide bases in DNA or RNA that together form a unit of genetic code. Each codon corresponds to a specific amino acid or a stop signal during protein synthesis, making it fundamental to translating genetic information into functional proteins.

Point Mutation

A point mutation is a change at a specific position in the genetic sequence where a single nucleotide is altered, inserted, or deleted. This type of mutation affects only one or a few nucleotides, and can lead to changes in the resulting protein if it alters the codon that encodes an amino acid.

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