The pattern of base pairs in the DNA double helix encodes the instructions for building the proteins necessary to construct an entire organism. DNA, or deoxyribonucleic acid, is found within most cells of an organism, an... More »

Wageningen University explains that DNA bases only pair with one other base, so the complementary DNA sequence can be read out by replacing each base with its complement and reversing the order. The complementary base pa... More »

AncestryDNA, 23andMe, the Genographic Project and AncestrybyDNA all offer DNA testing to determine ancestry. These services analyze and compare DNA to determine an individual's ancestral origins. More »

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Deoxyribonucleic acid, or DNA, is referred to as a blueprint because it contains the entire set of instructions that specify the inherent characteristics and traits that an organism will possess after birth. DNA is analo... More »

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When DNA is denatured, the hydrogen bonds that hold the double helix together break apart, separating the DNA molecule into two single strands. Denaturation occurs as the temperature increases, according to Ian VanLare, ... More »

The base pairs in DNA are adenine to thymine and guanine to cytosine. In RNA, they are adenine to uracil and guanine to cytosine. More »

Human DNA contains a total of approximately 3 billion base pairs within the genome. These base pairs are contained within 23 chromosome pairs. More »