Pre-1947 British silver coins contain 50% silver. Pre-1920 coins are 92.5% silver. Update 11 Sept 2015: Since writing this post, we have launched our pre-decimal silver coin valuation calculator. If you donât know the weight of your coins, but know their face value, we can estimate the value for you.
A genetically modified organism (GMO) is an organism whose genetic material has been altered using genetic engineering techniques.Organisms that have been genetically modified include micro-organisms such as bacteria and yeast, insects, plants, fish, and mammals.GMOs are the source of genetically modified foods, and are also widely used in scientific research and to produce goods other than food. genetically modified organism (GMO) is an organism whose genetic material has been altered using genetic engineering techniques.
1 Once the mutant genes are out of the bag, there is no going back. 2  Genetically modified organisms contaminate existing seeds with their altered material, passing on modified traits to non-target species. 3  This creates a new strain of plant that was never intended in the laboratory. Many scientists are worried that the genetically altered foods, once consumed, may pass on their mutant genes to bacterium in the digestive system, just like the canola plants on the roadsides of North Dakota. 2  How these new strains of bacteria may affect our body systemsâ balance is anybodyâs guess.