15 A mutation that occurs when a base?inserted into or deleted from, DNA sequenc

Question

15 A mutation that occurs when a base?inserted into or deleted from, DNA sequence, completely altering an entire amino acid sequencs, is called s a. Missense mutation b, Silent mutation G, Frameshift mutation d. Nonsense mutatiorn 16, A IRNA that recognizes a nonsense codon, and inserts an amino acid where protein synthesis should have stopped, is called a a. Nonsense tRNA b. Revertant tRNA c. Excision tRNA d. Suppressor tRNA 17, The enzyme that some organisms use to replicate the 5' ends of chromosomes is called a. DNA polymerase b, telomerase G. DNA ligase d. replicase

Explanation / Answer

15) C. When mutation leads to complete change in amino acid sequence its is called "frame shift mutation".

16) D. suppresser tRNA.

17) B. telomerase are used to replicate the 5' ends of chromosomes.

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