We Catholics can talk science yah knaw and I am not a scientist.
If you dont know what a DNA is check out this page
and here are some interesting facts about DNA
1)The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases.
2)To understand DNA’s double helix from a chemical standpoint, picture the sides of the ladder as strands of alternating sugar and phosphate groups – strands that run in opposite directions. Each “rung” of the ladder is made up of two nitrogen bases, paired together by hydrogen bonds. Because of the highly specific nature of this type of chemical pairing, base A always pairs with base T, and likewise C with G. So, if you know the sequence of the bases on one strand of a DNA double helix, it is a simple matter to figure out the sequence of bases on the other strand.
3)An important property of DNA is that it can replicate, or make copies of itself. Each strand of DNA in the double helix can serve as a pattern for duplicating the sequence of bases. This is critical when cells divide because each new cell needs to have an exact copy of the DNA present in the old cell.
4)The language of DNA is digital, but not binary. Where binary encoding has 0 and 1 to work with (2 – hence the ‘bi’nary), DNA has 4 positions, T, C, G and A. The human genome is about 3 gigabases long, which boils down to 750 megabytes.
The question for the atheists are
1)How can you have 3 billion bases in sequence worth of informations evolve or just appear ?
a)It is even more interesting when you express in terms of mathematematical formula 3 billion base pairs. It is 1 in 3 billion which is a very very small number. Yes DNA can only be arranged one way even if useful data from it is only 2 percent. Informations from it has to be in proper location otherwise we will not be like what we are today.
2)The fact that base A always pairs with base T and C with G does not seem to be the work of chance to me, how do you explain that ?
3)How did DNA learn to replicate itself ?