(C) $Thermococcus$,$Methanococcus$,and $Methanobacterium$ are members of the domain Archaea (Archaebacteria).Archaebacteria are unique because they po

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Archaebacteria that contain protein homologous to eukaryotic core histones.

(C) $Thermococcus$,$Methanococcus$,and $Methanobacterium$ are members of the domain Archaea (Archaebacteria).Archaebacteria are unique because they possess proteins that are homologous to eukaryotic core histones,which help in the packaging of their $DNA$.These histone-like proteins stabilize the $DNA$ in these organisms,which is a characteristic feature distinguishing them from true bacteria.

Class 11 Biology Biological Classification Monera (Prokaryotes)

Medium

$Thermococcus$,$Methanococcus$,and $Methanobacterium$ are examples of:

A
Bacteria whose $DNA$ is relaxed or positively supercoiled but have a cytoskeleton and mitochondria.
B
Bacteria that contain a cytoskeleton and ribosomes.
C
Archaebacteria that contain protein homologous to eukaryotic core histones.
D
Archaebacteria that lack histones resembling those found in eukaryotes but whose $DNA$ is negatively supercoiled.