Within the dna double helix, what are nucleotides together by ?

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content