Triops is a genus of small crustaceans in the order Notostraca (tadpole shrimp). Some species are considered living fossils, with a fossil record that reaches back to the late Carboniferous, 300 million years ago.
DNA structure. DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).The order of these bases is what determines DNA's instructions, or genetic code.NA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).
DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. DNA is comprised of two long strands that form a spiral called a double helix. Each of the two strands of the DNA molecule is a chain of smaller molecules.Each link in the chain is composed of one sugar molecule, one phosphate molecule and one nucleotide molecule.There are four types of nucleotide molecules, or bases, in DNA: adenine (A), thymine (T), guanine (G) and cytosine (C).NA. RNA, or ribonucleic acid, is part of a group of molecules known as the nucleic acids which, along with lipids, carbohydrates and proteins, comprise the major macromolecules essential for all known forms of life. Like DNA, RNA is made up of a long chain of components called nucleotides.