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Warren Weaver (July 17, 1894 – November 24, 1978) [1] was an American scientist, mathematician, and science administrator. [2] He is widely recognized as one of the pioneers of machine translation and as an important figure in creating support for science in the United States.
It is not known whether homochirality existed before life, whether the building blocks of life must have this particular chirality, or whether life must be homochiral at all. [8] [9] What do all the unknown proteins do? Two decades since the first eukaryotes were sequenced, the "biological role" of around 20% of proteins are still unknown. [10]
In its modern sense, molecular biology attempts to explain the phenomena of life starting from the macromolecular properties that generate them. Two categories of macromolecules in particular are the focus of the molecular biologist: 1) nucleic acids , among which the most famous is deoxyribonucleic acid (or DNA), the constituent of genes , and ...
In Weaver's view, disorganized complexity results from the particular system having a very large number of parts, say millions of parts, or many more. Though the interactions of the parts in a "disorganized complexity" situation can be seen as largely random, the properties of the system as a whole can be understood by using probability and ...
[28] This is because it was the first comprehensive insight into genetic information (later called the central dogma of molecular biology), protein synthesis (known as the sequence hypothesis), the role of RNA (the adaptor hypothesis) as well as the existence of genetic code. [3]
Figure 1: Diagram of Mason–Weaver cell and Forces on Solute. A typical particle of mass m moving with vertical velocity v is acted upon by three forces (Fig. 1): the drag force, the force of gravity and the buoyant force, where g is the acceleration of gravity, V is the solute particle volume and is the solvent density.
More than 99 percent of all species that ever lived (over five billion) [1] are estimated to be extinct. [2] [3] Estimates on the number of Earth's current species range from 10 million to 14 million, [4] with about 1.2 million or 14% documented, the rest not yet described. [5]
Life, by David E. Sadava et al., is a 1983 biological science textbook, under continual revision, used at many colleges and universities around the United States of America. [1] As of 2024, it is in its twelfth edition.