Har Gobind Khorana is credited for the discovery of –

Correct answers: (a) Synthesis of Protein or (b) Synthesis of gene

Explanation

Har Gobind Khorana shared the 1968 Nobel Prize in Physiology or Medicine with Robert Holley and Marshall Nirenberg for interpreting the genetic code and its role in protein synthesis.

In 1970 he also made the first artificial gene. Keys differ between these two, so both are accepted.

Keys differ: (a) follows his Nobel Prize for the genetic code in protein synthesis, (b) his first artificial gene (1970). Both are accepted here.