1. List three different mRNA sequences that could encode the amino acid sequence histidyl-alanyl-arginyl-seryl-leucyl-valyl-cysteine.
2. Write a DNA sequence that would encode the amino acid sequence valyl-tryptophanyl-lysyl-prolyl-phenylalanyl-threonine.
3. Titin is a muscle protein named for its size. Its gene has the largest known coding sequence of 80,781 DNA bases. How many amino acids long is it?
4. The human genome sequence encodes many more mRNA transcripts than there are genes. Why isn’t the number the same?
5. Locate as accurately as possible the listed items that are shown on the following figure. Some items are not shown. (a) 5′ end of DNA template strand; (b) 3′ end of mRNA; (c) ribosome; (d) promoter; (e) codon; (f) an amino acid; (g) DNA polymerase; (h) 5′ UTR; (i) centromere; (j) intron; (k) anticodon; (l) N terminus; (m) 5′ end of charged tRNA; (n) RNA polymerase; (o) 3′ end of uncharged tRNA; (p) a
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