Gene Error Prevention

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Gene code letters have built in error protection, as reported in Nature science update 18 Sep 2002. Genes store information on long strings DNA, in the form of chemical letters, called A, T, C and G. So that genes can be accurately copied each gene consists of two parallel strands of DNA held together by links between the code letters of one strand and those on the other strand. The two strands are not identical, i.e. A's do not link to A's etc. Instead they are complementary. A's always link to T's, C's always link to G's. Donail MacDonaill of Trinity College Dublin studied that pattern of linkages between the letters and found they form a parity code similar to computer codes used to minimise mistakes during electronic transfer of information.

Editorial Comment: Electronic parity codes did not evolve by chance; they were carefully planned by software designers. The parity code found in DNA is further evidence the genetic code was deliberately created. It also reminds us that DNA is designed to maintain accurate copies and avoid changes in the information it carries. This means it is designed not to evolve. This also means it is well designed to enable living things to multiply after their kinds, just as Genesis describes.

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