Question

Which of the following histones would you expect to be the LEAST likely conserved throughout evolution?

a) H2A
b) H2B
c) H3
d) H4

Answer 1

Histone H2B is the least likely to be conserved throughout evolution among the given options. H2A, H3, and H4 are highly conserved compared to H2B.

Step-by-step explanation:

Among the given options, H2B (Histone H2B.1 or Histone H2B.4) would be the LEAST likely to be conserved throughout evolution. Histones are DNA binding proteins that aid in DNA packaging, and they play a crucial role in maintaining the structure and organization of chromosomes. While H2A, H3, and H4 are highly conserved across species, H2B exhibits more variability in its sequence, making it less likely to be conserved.