What are the characteristics of archaebacteria

Explanation:

Only archaebacteria are capable of methanogenesis

Archaebacteria who use other forms of cellular respiration also exist, but methane-producing cells are not found in Bacteria or Eukarya.

Unique cell membrane chemistry. Archaebacteria have cell membranes made of ether-linked phospholipids,

answer; i believe the answer is (polygenic inheritance;