Gamewizard Posted March 28, 2010 Share Posted March 28, 2010 Hi guys, I am not really sure on how to answer these type of questions, i knw there would be a formula/method to calculate them, When the base composition of DNA from 'an organism' was determined, 16% of the bases were found to be adenine- what is the percentage of cytosine? what is the entire % base composition (% of A, T,C, G) of the DNA? any ideas Link to comment Share on other sites More sharing options...
dttom Posted March 28, 2010 Share Posted March 28, 2010 so you know the pairing rule, there's only two combinations, knowing one of them gives you another. Link to comment Share on other sites More sharing options...
Gamewizard Posted March 28, 2010 Author Share Posted March 28, 2010 But how do we calculate the percentage ? Link to comment Share on other sites More sharing options...
Bobr Posted March 28, 2010 Share Posted March 28, 2010 well, you have percentage of adenine. from which you can assume directly the percentage of adenine pairing mate. the rest would be the others. Link to comment Share on other sites More sharing options...
jimmydasaint Posted April 7, 2010 Share Posted April 7, 2010 Agreed with the above. This is also a clue but you have to do your own reading: Specific Base-Pairing The base-pairing mystery had been partly solved by the biochemist Erwin Chargoff some years earlier. In 1949 he showed that even though different organisms have different amounts of DNA, the amount of adenine always equals the amount of thymine. http://nobelprize.org/educational_games/medicine/dna_double_helix/readmore.html Link to comment Share on other sites More sharing options...
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