Triplet UUC codes for

The triplet UUU codes for :

The triplet UUU codes for :

The triplet codes for several amino acids are experimentally determined by :

Is there any base triplet that codes for more than one amino acid?

Is there any base triplet that codes for more than one amino acid?

Are there any base triplets that code for amino acids and also for start signals ? Name these.

Are there any base triplets that code for amino acids and also for start signals? Name these.

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