Briefing: Anyone for a cloned steak and milkshake?
Briefing: Anyone during a cloned steak and milkshake?
11:37 05 August 2010 ~ means of Nic Fleming
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The UK’s Food Standards Agency says the newly revealed sale of beef and possibly milk from the offspring of cloned rabble is unlawful. So what is all the fuss about?
What is a clone?
Clones are rigid genetic copies of organisms. They occur naturally when bacteria, plants and insects propagate asexually, and when mammalian embryos split and go on to lay open into identical twins. Growing a plant from a cutting is besides a form of cloning.
Why clone animals?
Cloning by a course known as “somatic cell nuclear transfer” (SCNF) has become a fundamental research tool with numerous applications, including in human medicine.
Conservationists bring forth used cloning to help protect endangered species such as the mouflon sheep.
Farmers puissance clone elite cattle, sheep or pigs that can be used in the place of breeding to create animals with higher milk yields, leaner meat or higher hindrance to disease. In May, a Spanish breeder produced the first cloned blunder created for bullfighting.
Why is it suddenly front-page news in the UK?
The New York Times reported latest week that an unnamed British diary farmer had claimed to be selling milk from a cow bred from a clone. The UK’s Food Standards Agency says flesh of neat-cattle from the offspring of a cloned cow entered the food succession last year. The FSA says this is illegal because “novel foods” fustiness have special authorisation before being sold. European Commission officials believe the FSA’s version of current laws is mistaken. The European Parliament voted for a execrate on food from clones and their descendants last month, but this has in addition to become law.
Are there any health dangers associated with catheretic food derived from cloned animals or their descendants?
There is ~t any evidence of any health dangers. In 2008, following a five-year exploration, the US Food and Drug Administration declared meat and milk from cloned cows and their child to be indistinguishable from that from traditionally reared livestock.
When animals are cloned, epigenetic changes be able to occur. These are not the same as permanent genetic mutations on the contrary can lead to changes in the number or type of genes expressed in the cloned irrational creature. If the clone reaches maturity and reproduces naturally, epigenetic changes determination often be reset, returning the sperm and egg nuclei to a rank in which they can differentiate into all types of tissue. So calm if a cloned cow’s meat or milk has some being of the kind which yet unidentified harmful characteristic, this should be less likely to have ~ing present in produce from any of its descendants.
What about the happiness of cloned animals?
Cloned animals are more likely to die for the period of pregnancy and after birth than those that are bred naturally.
Abnormalities take in breathing, kidney and brain problems. Offspring can also be unusually of great size and heavy. This is thought to be linked to damage caused in the handling of embryos. Defect levels succeed according to species and procedures, and appear less common in cloned dumb beasts than in other cloned animals such as sheep.
However, recent advances in cloning techniques ordinary rates of abnormalities are now significantly lower than they were whenever Dolly the sheep, the first mammal cloned from an adult simplest organism, was created in 1996 by Ian Wilmut and his team in the UK.
In the US, the mainstream inspect is that the benefits in animal breeding offset any potential distress associated with cloning, while many scientists in Europe take the over against view.
More information is available to New Scientist subscribers in our Instant Expert mentor to cloning.
