An alteration in the nucleotide sequence of a gene can alter the gene product. E

Question

An alteration in the nucleotide sequence of a gene can alter the gene product. Each sentence below is made up of three-letter words, representing mRNA codons. THE FAT CAT SAT THE CAR WAS RED SHE HAS THE DOG The same sentences are written below with a substitution, deletion, or insertion, much as a gene may have a substitution, deletion, or insertion mutation. Identify which sentence represents a substitution, which represents a deletion, and which represents an insertion.?

substitution        deletion          insertion

The cat was red                  The fat aca tsa t                   SHE Has The DG

Explanation / Answer

The cat was red: Substitution

The fat aca tsa t:  Insertion

SHE Has The DG:  Deletion

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