HIST10014 Lecture Notes - Lecture 1: Cambrian Explosion, Robert Hooke, Stromatolite
6 Aug 2018
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Analogous traits: structures with a similar function as a result of convergence. Arti cial selection: humans decide which plants or animals should leave o spring with their genes to the next generation which allows people to reproduce a particular trait in excess or prevent the reproduction of a particular trait. Biological evolution: change over time in the genetic composition of populations. Genetic di erences within the same species in di erent environments can potentially lead to the divergence of a new species. Cambrian explosion: 541 million years ago in the cambrian period when most major animal phyla appeared in the fossil record, resulting in the divergence of most modern metazoan phyla. Cell: a bag, a closed domain where the chemical reactions required for life are carried out. Cells are small, membrane bound compartments in which most biological reactions occur. Cell theory: third generalisation of biology, see below.
