First evidence for triplet genetic code was given by . . . . . . .

$A$ strand of deoxyribonucleotide contains information for a polypeptide consisting of $50$ amino acids. If a mutation occurs at the $25$th codon,changing $UAU$ to $UAA$,what will be the result?

Which is the initiation codon for protein synthesis in eukaryotes?

Which of the following represents the correct sequence of codons for the amino acid Alanine?

The genetic codes for arginine are:

Match the codons given in column $I$ with their respective amino acids given in column $II$ and choose the correct answer.

Column $I$ (Codons)	Column $II$ (Amino acids)
$(A)$ $UUU$	$(I)$ Serine
$(B)$ $GGG$	$(II)$ Methionine
$(C)$ $UCU$	$(III)$ Phenylalanine
$(D)$ $CCC$	$(IV)$ Glycine
$(E)$ $AUG$	$(V)$ Proline