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  2. Natural selection - Wikipedia

    en.wikipedia.org/wiki/Natural_selection

    Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

  3. Amylase - Wikipedia

    en.wikipedia.org/wiki/Amylase

    An amylase (/ ˈ æ m ɪ l eɪ s /) is an enzyme that catalyses the hydrolysis of starch (Latin amylum) into sugars.Amylase is present in the saliva of humans and some other mammals, where it begins the chemical process of digestion.

  4. α-Amylase - Wikipedia

    en.wikipedia.org/wiki/Α-Amylase

    The starch iodine test, a development of the iodine test, is based on colour change, as α-amylase degrades starch and is commonly used in many applications. A similar but industrially produced test is the Phadebas amylase test, which is used as a qualitative and quantitative test within many industries, such as detergents, various flour, grain ...

  5. On the Tendency of Species to form Varieties; and on the ...

    en.wikipedia.org/wiki/On_the_Tendency_of_Species...

    The article was the first announcement of the Darwin–Wallace theory of evolution by natural selection; and appeared in print on 20 August 1858. The presentation of the papers spurred Darwin to write a condensed "abstract" of his "big book", Natural Selection. This was published in November 1859 as On the Origin of Species.

  6. Active site - Wikipedia

    en.wikipedia.org/wiki/Active_site

    Organisation of enzyme structure and lysozyme example. Binding sites in blue, catalytic site in red and peptidoglycan substrate in black. (In biology and biochemistry, the active site is the region of an enzyme where substrate molecules bind and undergo a chemical reaction.

  7. Unit of selection - Wikipedia

    en.wikipedia.org/wiki/Unit_of_selection

    A unit of selection is a biological entity within the hierarchy of biological organization (for example, an entity such as: a self-replicating molecule, a gene, a cell, an organism, a group, or a species) that is subject to natural selection. There is debate among evolutionary biologists about the extent to which evolution has been shaped by ...

  8. β-Amylase - Wikipedia

    en.wikipedia.org/wiki/Β-Amylase

    β-Amylase (EC 3.2.1.2, saccharogen amylase, glycogenase) is an enzyme with the systematic name 4-α-D-glucan maltohydrolase. [ 2 ] [ 3 ] [ 4 ] It catalyses the following reaction: Hydrolysis of (1→4)-α- D -glucosidic linkages in polysaccharides so as to remove successive maltose units from the non-reducing ends of the chains

  9. Fisher's fundamental theorem of natural selection - Wikipedia

    en.wikipedia.org/wiki/Fisher's_fundamental...

    Fisher's fundamental theorem of natural selection is an idea about genetic variance [1] [2] in population genetics developed by the statistician and evolutionary biologist Ronald Fisher. The proper way of applying the abstract mathematics of the theorem to actual biology has been a matter of some debate, however, it is a true theorem.