Weed

weed A plant not valued for its use or beauty and not intentionally planted; a category of hay fever plants that includes nongrass and nontree species.
weir Filtration apparatus in flame-cell protonephridia of flatworms.
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A weed called mouse-eared cress has been designed to produce a biodegradable plastic called polyhydroxubutrate (PHB).
Possibilities for the Future ...
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Klamath Weed
In 1946 two species of Chrysolina beetles were introduced into California to control the Klamath weed (also known as St. Johnswort, and the same plant that yields the popular herbal concoction) that was ruining millions of acres of range ...
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When selection acts to weed out deleterious alleles, or causes an allele to sweep to fixation, it depletes genetic variation.
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W Weed. An undesirable plant. Weediness. Unwanted effects of a plant. Wild type. An organism as found in nature; the organism before it is genetically engineered. X X-linked disease. A genetic disease caused by a mutation on the X chromosome.
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This mustard weed was one of the first plants to have its genome sequenced. The sequencing of the rice genome and a large international research community have made rice the de facto cereal/grass/monocot model.
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For example, transgenic crop plants capable of degrading weed killers allow farmers to spray weeds without affecting yield.
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Tussock: a hummock of grasses or sedges bound together by their roots Weed: a species that volunteers in artificially modified habitats and is considered undesirable by people.
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For the first time scientists have sequenced the complete genetic material of a plant, that of the weed Arabidopsis thaliana.
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This mustard weed was one of the first plants to have its genome sequenced.
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mulch. A layer of material placed on the soil surface to prevent weed growth.
mummy. Unharvested nut remaining on the tree (also called sticktight); the crusty skin of an aphid whose inside has been consumed by a parasite.
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Model organisms for developmental biology include the round worm Caenorhabditis elegans, the fruit fly Drosophila melanogaster, the zebrafish Brachydanio rerio, the mouse Mus musculus, and the weed Arabidopsis thaliana.
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By hand, with the hands, in distinction from instrumentality of tools, engines, or animals; as, to weed a garden by hand; to lift, draw, or carry by hand.
Clean hands, freedom from guilt, esp.
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