A TWO child average will not solve overpopulation. With a two child average per woman (or per man), total population would go up by about two billion more â to nine billion! â before it even levels off! And it would not decline below 8 billion for another 200 years!
Nucleic acids. Nucleotides can link together by the formation of phosphate ester bonds. The hydroxyl group of a phosphate on one nucleotide undergoes a condensation reaction with the hydroxyl group on the carbohydrate ring of another nucleotide. The process may continue, building up nucleic acid molecules. These are polymers called polynucleotides. Formation of a polynucleotide. Nucleic acids are the 'building blocks' of DNA and RNA. The structure of DNA. DNA is formed from two polynucleotide chains.
1 Nitrogenous bases can form hydrogen bonds. 2  Adenine, Thymine, and Uracil can form TWO hydrogen bonds. 3  Guanine and Cytosine can form THREE hydrogen bonds. 4  In nucleic acids (DNA and RNA), nitrogenous bases can bind to each other by hydrogen bonding. In DNA, Adenine binds to Thymine. 2  In RNA, Adenine binds to Uracil. 3  These hydrogen-bond interactions between nucleotides C-G and A-T or A-U are referred to as base-pairing or complementary base-pairing. 4  Base-pairing holds the double-stranded DNA molecule together.