Question

All EXCEPT which of the following experiments or discoveries helped to identify the "triplet nature" of the DNA code?

1) Anticodons
2) Repeating copolymers
3) Frameshift mutations
4) Universality of the genetic code

Answer 1

Anticodons, repeating copolymers, and frameshift mutations helped to identify the "triplet nature" of the DNA code.

Step-by-step explanation:

The experiments or discoveries that helped to identify the "triplet nature" of the DNA code include: 1) Anticodons, which are the complementary sequences to codons and play a crucial role in translation.

2) Repeating copolymers, which helped demonstrate that the genetic code is degenerate, meaning that multiple codons can specify the same amino acid. 3) Frameshift mutations, which showed that the insertion or deletion of nucleotides can shift the reading frame and result in completely different protein sequences. The only option that does not help to identify the "triplet nature" of the DNA code is 4) Universality of the genetic code, as this concept refers to the fact that the same genetic code is used by all living organisms.