Answer:
Radial loop domains refers to the second level of DNA compaction, involving the zigzag structure attached to scaffold proteins. Radial loop domains are found on the inner surface of the peripheral histone and help to stabilize it.
Step-by-step explanation:
The radial loop domains refer to the second level of DNA compaction, and involve the zigzag structure attached to scaffold proteins. Radial loop domains are found in all organisms, including prokaryotes and eukaryotes. The scaffold protein is typically one of the basic helix-loop-helix (BH3) proteins, such as Drosophila BH3 domal or mammalian BH3 proteins.