For the peptide sequence (from N to C terminus) Lys-Arg-Ser-Cys-Tyr-Tyr-Trp-HisLys (KRSCYYWHK), which of the following is the correct coding sequence of the gene encoding this peptide?

• Correct answer
  A

  $3^{\prime}$-aaa tac ggt tat tat cgt cga cge aaa- $5^{\prime}$
• B

  $3^{\prime}$-aaa cge agc tge tat tat tgg cat aaa- $5^{\prime}$
• C

  3'-ttt gtagta gtc gta gca act gcg ctt-5'
• D

  3'-ttc gcg tca acg ctg ctg att gcg ttc-5'

Hence, the correct answer is option: 'A'.