- Settore: Agriculture
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Established in October 1945 with the objective of eliminating hunger and improving nutrition and standards of living by increasing agricultural productivity, FAO coordinates the efforts of governments and technical agencies in programs for developing agriculture, forestry, fisheries, and land and ...
A pH indicator paper (range 4.5-8.3) impregnated with an extracted lichen pigment. It turns red in acidic and blue in alkaline solutions. However, the use of litmus paper as an indicator is not a precise method of pH measurement.
Industry:Biotechnology
A phage (virus) that invades but may not destroy (lyse) the host (bacterial cell). However, it may subsequently enter the lytic cycle.
Industry:Biotechnology
A phase of the virus life cycle during which the virus replicates within the host cell, releasing a new generation of viruses when the infected cell lyses.
Industry:Biotechnology
A phenomenon controlled by the complex S locus, in which a pollen grain cannot fertilize an ovule produced by a plant that carries the same S allele as the pollen grain. Thus S<sub>1</sub> pollen cannot fertilize an ovule of a plant possessing the S<sub>1</sub> allele.
Industry:Biotechnology
A phenomenon whereby inactivation of all but one of the X chromosomes in female mammals results in males and females producing the same quantity of peptide from X-linked genes.
Industry:Biotechnology
A phenomenon whereby only one functional allele of an antibody gene can be assembled in a given B lymphocyte. The "allele" on the other homologous chromosome in a diploid mammalian cell cannot undergo a functional re-arrangement, which would result in the production of two different antibodies by a single plasma cell.
Industry:Biotechnology
A picture prepared by labelling a substance such as DNA with a radioactive material such as tritiated thymidine and allowing the image produced by decay radiation to develop on a film over a period of time.
Industry:Biotechnology
A pituitary hormone which causes growth of the yellow body of the ovary and also stimulates activity of the interstitial cells of the testis.
Industry:Biotechnology
A planned and managed repository containing animal genetic resources. Repositories include the environment in which the genetic resource has developed, or is now normally found <i>(in situ)</i> or facilities elsewhere <i>(ex situ - in vivo</i> or <i>in vitro).</i> For <i>in vitro, ex situ</i> genome bank facilities, germplasm is stored in the form of one or more of the following: semen, ova, embryos and tissue samples.
Industry:Biotechnology
