$A$ codon consists of .......

The anticodon found on the $t-RNA$ for tryptophan amino acid is

In sickle cell anaemia,glutamic acid is replaced by valine. Which of the following codes for glutamic acid?

Who proposed the 'one gene one enzyme' hypothesis?

Which of the following statements is true regarding the genetic code?

In $mRNA$,$AUG$ is the initiation codon and $UAA$,$UAG$,and $UGA$ are termination codons; therefore,a polypeptide cannot be synthesized beyond any of these triplets to the end of the $mRNA$. Which one of the following $mRNA$ sequences can be translated completely?