The debate on genetically modified organisms: Relevance for the
... species to be utilised more quickly and precisely than do the methods of traditional plant breeding. But most attention has been focussed on new techniques
that allow genetic transfers between species. The products of these transfers (‘transgenic crops') are often referred to as GMOs.
GMOs incorpora ...
Transgenic Rice Plants Containing a Chlorsulfuron Resistance
... gene analysis was still hampered by a number of problems. The availability of only a
few selectable markers suitable for rice transformation generated limitations in further
improvement of the selection and regeneration of transgenic rice plants and restricted the
development of more complicated des ...
Genome Manipulations and Mutants in Amphibians
... studies in the 1960's resulted from the use of this animal for human pregnancy testing: females lay
eggs at any time of year in response to human chorionic gonadotropin, found in high levels in the
urine of pregnant women. The ability to obtain embryos year-round from a hardy lab animal was a
Increased Nicotianamine Biosynthesis Confers Enhanced Tolerance
... their strength in the roots and shoots on MS medium. However, the expression of all four AtNAS genes was increased on
medium containing 200 µM NiSO4. This result indicates that
Arabidopsis plants exposed to excess Ni produced a higher
amount of NA with enhanced activities of native AtNAS to tolerate ...
alternatives for generating genetically engineered animals
... gene ablation or transgene expression, providing a mechanism for minimizing adverse effects on
animal welfare and limiting pre- or post-natal deaths that may be associated with constitutive
knock-outs or over-expression of the transgene (Robinson et al., 2003). Temporo-spatial control
of gene expres ...
pTransgenesis: a cross-species, modular
... four elements, including sequences that facilitate transgene genome integration, a selectable marker and promoter elements
driving a coding gene. Linking these four elements in a DNA construction, however, can be a rate-limiting step in the design and
creation of transgenic organisms. In order to ex ...
Barriers and paths to market for genetically engineered crops
... A second essential component for field trials is the availability of robust high-throughput assay systems, which
make it possible to screen plants before, during, and after
harvest. Near-infrared spectroscopy is most suitable for
non-destructive determinations of abundant macromolecules including pr ...
Eighteen years ago, genetically modified food was introduced in the
... Eighteen years ago, genetically modified food was introduced in the United States. First there
were tomatoes, then soybeans, potatoes and corn. As the years passed, more and more farmland
was planted with genetically modified crops—plants with a gene added to their DNA, giving
them new traits such a ...
Student activity: Role-play ethics and transgenics
... production to be increased quickly to meet market demand. This is in comparison with cell
culture systems, which require investment in expensive infrastructure in which to grow and
maintain them in order to scale up production.
The proteins produced are superior. Animals are able to produce highly c ...
Cytokinesis = xxxx words
... transferred to plants, the plant cells produce a protein toxic to some insects and hence
become resistance to these insects. The grains of Bt maize were also found to contain
low mycotoxin thus exhibit better food safety than non-GM corns. Another example is
the successful insertion of gene resistan ...
These GMOs do not have to be any specific organism, there are
... visible. More than a boon to squeamish students, the see-through frog could aid biologists studying how
organs develop and respond to tumors or toxins.
In 1999, Dr. Zhiyuan Gong and his colleagues at the National University of Singapore were working with a
gene that encodes the green fluores ...
Biotechnology and Genetic Engineering
... Where do GloFish® fluorescent zebra fish come from?
GloFish® fluorescent zebra fish were originally bred to help detect
environmental pollutants. By adding a natural fluorescence gene to the
fish, scientists hope to one day quickly and easily determine when our
waterways are contaminated. The first ...
Genetically modified fish
Genetically modified fish (GM fish) are genetically modified organisms. The DNA of the fish has been modified using genetic engineering techniques. In most cases the aim is to introduce a new trait to the fish which does not occur naturally in the species. GM fish are used in scientific research, and while they are being developed for use in aquaculture food production, as of May 2012 no GM fish has been approved by the FDA for this purpose. Some GM fish that have been created have promoters driving an over-production of ""all fish"" growth hormone. This resulted in dramatic growth enhancement in several species, including salmonids, carps and tilapias.Critics have objected to GM fish on several grounds, including ecological concerns, and with respect to whether using them as food is safe and whether GM fish are needed to address the world's food needs. See the genetically modified food controversies article for discussion of issues about GM food and Regulation of the release of genetic modified organisms for discussion of regulatory regimes around the world.