Because many animals and situations include an animal that has been poisoned by maybe eating the wrong thing and if you don’t know how to treat toxicology many animals could die
This is known as double helix. Nucleotides each have three parts: phosphate, sugar molecule<span>, and one of four </span>bases<span>. The </span>bases<span> include: A, (adenine), g (guanine), t (thymine), c (cytosine). ... </span>Explain why complementary base pairing is necessary to maintain the double helix shape of the DNA molecule<span>.</span>