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Propagule pressure plays an important role in species invasions (Groom, 2006). Charles Darwin was the first to study specific factors related to invasions of non-native species. In his research he identified that few members of the same genus were present in habitats containing naturalized non-indigenous species (Colautti et al., 2006).
When investigating the coupling of the circadian systems in the intact plants, Thain et al. placed foil covering over one cotyledon and entrained the other uncovered cotyledon to a light-dark cycle of 12 hours light and 12 hours dark (LD 12:12), 6 hours ahead of the covered cotyledon. Then, the researchers covered the opposite cotyledon and ...
A 2016 study by Kumar et al. [13] chemically analyzed these secretions, concluding that they may be required in chemosensory mediated communication [14] and mate choice. Similarly, in the less aggressive herb-field mouse, males are observed to groom females for longer durations and even allow females to not reciprocate. [ 15 ]
The term "biobank" first appeared in the late 1990s and is a broad term that has evolved in recent years. [1] [2] One definition is "an organized collection of human biological material and associated information stored for one or more research purposes."
In 1999, Metabolite sued LabCorp for infringement of a patent covering a diagnostic test. The single claim at issue, claim 13, is reproduced in full below: "A method for detecting a deficiency of cobalamin or folate in warm-blooded animals comprising the steps of: "assaying a body fluid for an elevated level of total homocysteine; and "correlating an elevated level of total homocysteine in ...
Edward Hitchcock's fold-out paleontological chart in his 1840 Elementary Geology. Although tree-like diagrams have long been used to organise knowledge, and although branching diagrams known as claves ("keys") were omnipresent in eighteenth-century natural history, it appears that the earliest tree diagram of natural order was the 1801 "Arbre botanique" (Botanical Tree) of the French ...
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The idea of a tree of life arose from ancient notions of a ladder-like progression from lower into higher forms of life (such as in the Great Chain of Being).Early representations of "branching" phylogenetic trees include a "paleontological chart" showing the geological relationships among plants and animals in the book Elementary Geology, by Edward Hitchcock (first edition: 1840).