stars and stripes 2 italics the national anthem of the united states of america based on a poem written by francis scott key on september 14 1814 and set by him to the melody of the english song to anacreon in heaven officially adopted by the u s congress in 1931 examples from the web for star spangled banner expand
The two strands of DNA are held together by weak hydrogen bonds (remember, something must hold them together!) between the nitrogenous bases. The interesting (and very important) aspect of the Watson-Crick model is that these hydrogen bonds are base specific.
the 4 nucleotide bases are adenine, guanine, thymidine & cytosine. In a double stranded DNA adenine always pairs with thymidine & guanine always pairs with cytosine. so knowi â¦ ng the base pairs in strand we can determine the base pairs of the other strand. hence DNA strand acts as a template during DNA replication.6 people found this useful.Adrian D.5,248 Contributions.n a double stranded DNA adenine always pairs with thymidine & guanine always pairs with cytosine. so knowi â¦ ng the base pairs in strand we can determine the base pairs of the other strand. hence DNA strand acts as a template during DNA replication. 6 people found this useful. Adrian D. 5,248 Contributions.