Biological systematics is the study of the diversification of living forms, both past and present, and the relationships among living things through time. Relationships are visualized as evolutionary trees (synonyms: cladograms, phylogenetic trees, phylogenies).Phylogenies have two components: branching order (showing group relationships) and branch length (showing …
Get DetailsChemistry is a branch of science that explores compounds and chemical elements, and how they work together. It is the study of the materials that make up our bodies and everything in …
Get DetailsFeb 19, 2005 No definition of “information” as it is used in molecular biology has yet received wide support among philosophers of biology. Stephen Downes (2006) helpfully distinguishes three positions on the relation between information and the natural world: Information is present in DNA and other nucleotide sequences.
Get DetailsJun 03, 2020 Eicosanoids definition. Eicosanoids are biologically active lipid derivatives of unsaturated fatty acids containing 20 carbons. Eicosanoids are locally acting bioactive hormones that act near the point of hormone synthesis and included in the class of …
Get DetailsJun 12, 2017 Cladistics Definition Cladistics refers to a biological classification system that involves the categorization of organisms based on shared traits. Organisms are typically grouped by how closely related they are and thus, cladistics can be used to trace ancestry back to shared common ancestors and the evolution of various characteristics.
Get DetailsMolecular Motion Definition. Molecular motion is defined as the movement of constituent particles or molecules in a certain direction. The molecular motions are affected by heat and temperature. This is because the temperature is the measurement of the average kinetic energy of the molecules and represents the motion of molecules.
Get DetailsNov 24, 2017 Geometric Isomers Definition. Geometric isomerism is a kind of stereoisomerism. It is also known as cis-trans isomerism or E-Z isomerism. Geometric isomerism occurs due to the restricted rotation about carbon-carbon double bonds …
Get DetailsRelative Atomic Mass. The link between the mass of an element and the number of atoms it contains is the relative atomic mass of the element. By using this chemists work out the chemical formula. The relative atomic mass scale is used to compare the masses of different atoms.
Get DetailsSep 17, 2021 Binomial Nomenclature Definition. The most well-known living things have common names. For example, you are probably familiar with the small, red insects dotted with little black spots.
Get DetailsThe mesoderm is the middle layer of the three germ layers that develop during gastrulation in the very early development of the embryo of most animals. The outer layer is the ectoderm, and the inner layer is the endoderm.. The mesoderm forms mesenchyme, mesothelium, non-epithelial blood cells and coelomocytes.Mesothelium lines coeloms.Mesoderm forms the muscles in a …
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