What fraction of human proteins have evolved new amino acids under selection pressure from viruses?

A) 1/10
B) 1/3
C) 1/2
D) 2/3

Amino Acids

Organic molecules that are the building blocks of proteins, playing critical roles in biology by forming the structures of proteins and participating in metabolic processes.

Selection Pressure

An environmental or biological force that influences the viability of organisms with certain phenotypes, affecting the natural selection process.

Viruses

Infectious agents that replicate only inside the living cells of an organism, can affect all types of life forms, from animals and plants to microorganisms.