Which of the following statements about tRNA are correct? 1. Temporary hydrogen bonds between bases keep tRNA aligned with mRNA. 2. The base sequence in the tRNA molecules is the same as the base sequence in the mRNA being translated. 3. Both the specificity of the tRNA molecule for glycine and the specificity of the enzyme that loads glycine are needed for correct loading.
- A1, 2 and 3
- B1 and 2 only
- C1 and 3 only
- D2 and 3 only