Scientists cannot know if the transfer was successful right away, thus they include an antibiotic resistant marker gene before transfer. The cells are then washed in antibiotics, and whatever survives the operation is considered a success, and the cells are duplicated to become the seed for our harvests.
One of the most common GMO crops is Roundup Ready. These crops have had DNA from a bacteria added which produces it so the food crop will not die when sprayed with Roundup or glyphosate. This allows farmers to spray the full area with Roundup.
Some other common case of GMO are crops that express the BT toxin. Bacterial Thuringiensis is a soil dwelling bacteria used to create a toxin used in organic agriculture. Nevertheless, with traditional use, the toxin could be rinsed away. Now, scientists have added DNA from BT to the cells of our crops. As a result the crop itself becomes a pesticide by expressing the BT Toxin. If a pest eats the plant, the pest dies. When the crops are modified in this way, they are registered with the EPA as a pesticide. They are in our food supply and they are unlabeled.
GMOs are sometimes confused with selective breeding or hybridization. In fact, proponents of this engineering science will often say scientists have only found a means to speed up breeding techniques which have been practiced for thousands of years.. This is simply NOT true. Selective breeding and hybridization have been about for thousands of years. Genetic modification is new and has merely been in our food supply since 1996.
It is important to realize the difference between selective breeding, hybridization and GMOs. With traditional breeding you could take two corn varieties and produce a new corn type. You could get two apple varieties and make a raw application. With GMO you can mix to completely foreign species, which would never blend with nature.
In the past, fish genes have been added to tomatoes to help them resist frost. They were sold in the US, but have been removed from the market. Genetically modified salmon is in the operation of being sanctioned. In that respect are additional GMO products in the pipeline for approval.
While these next examples are not in our food supply, it is significant to recognize what this science is capable of. It is also significant to recognize that the current policy regarding labeling and human safety testing is lax enough that some of these could be introduced into our food supply without testing or labels.
- Jellyfish genes have been added to pigs and kittens resulting in organs and other body parts which glow green.
- Spider DNA has been added to goats to create goats whose milk contains spider web silk.
- Cows in China have been modified so they produce human milk.
Cows with human milk DNA
- There are test fields of rice, which contain human blood proteins.
- The first genetically engineered babies have been delivered. They have DNA from 3 separate Adults.
This engineering is far different than hybridization and selective breeding, and should never be mixed up. This is a completely unnatural technology, which involves no human safety testing or mandatory labeling in the US. We should not allow this industry to deliberately confuse genetic modification and traditional plant and animal breeding programs...
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