While classical genetics relies on changes in the order of the bases in the DNA strands, other heritable changes have been discovered鈥攃hanges in the chemical makeup of the bases that control gene activities, for example鈥攁nd are increasingly recognized as important in development and evolution. For example, the base cytosine might undergo a chemical modification involving the addition of a single carbon atom.
Wednesday, December 2, 2009
What does the chemical makeup of the cells of an organism tell scientists about it's evolutionary history?
PLEASE!!!!!!! HELP!!!!!!!!!!What does the chemical makeup of the cells of an organism tell scientists about it's evolutionary history?
While classical genetics relies on changes in the order of the bases in the DNA strands, other heritable changes have been discovered鈥攃hanges in the chemical makeup of the bases that control gene activities, for example鈥攁nd are increasingly recognized as important in development and evolution. For example, the base cytosine might undergo a chemical modification involving the addition of a single carbon atom.computer security
While classical genetics relies on changes in the order of the bases in the DNA strands, other heritable changes have been discovered鈥攃hanges in the chemical makeup of the bases that control gene activities, for example鈥攁nd are increasingly recognized as important in development and evolution. For example, the base cytosine might undergo a chemical modification involving the addition of a single carbon atom.
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