having or showing a disposition to avoid exertion; slothful: an indolent person. 2. Pathology. causing little or no pain; inactive or relatively benign: an indolent ulcer that is not painful and is slow to heal.
A polynucleotide is a nucleic acid molecule consisting of a long chain of nucleotides. Nucleotides in a polynucleotide molecule are held together by a bond between the phosphate group of one nucleotide and the sugar of a second nucleotide, which is called a phosphodiester bond.
Quick Answer. Nucleotides are held together by two types of bonds: phosphodiester bonds and hydrogen bonds. Education Portal describes phosphodiester bonds as bonds that link nucleotides into linear chains. According to Cambridge Physics, hydrogen bonds act as a bridge that connects two parallel rows of nucleotides.