biology

Genetically modified sugar beet

Genetically modified sugar beet is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Genetically modified sugar beet rather than just read about it. In short: A genetically modified sugar beet is a sugar beet that has been genetically engineered by the direct modification of its genome using biotechnology. Commercialized GM sugar beets make use of a glyphosate-resistance modification developed by Monsanto and KWS Saat.

Key takeaways

Genetically modified sugar beet belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Genetically modified sugar beet to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Genetically modified sugar beet from memory before moving on to harder problems.

Reference excerpt

A genetically modified sugar beet is a sugar beet that has been genetically engineered by the direct modification of its genome using biotechnology. Commercialized GM sugar beets make use of a glyphosate-resistance modification developed by Monsanto and KWS Saat. These glyphosate-resistant beets, also called 'Roundup Ready' sugar beets, were developed by 2000, but not commercialized until 2007. For international trade, sugar beets have a Maximum Residue Limit of glyphosate of 15 mg/Kg at harvest. As of 2016, GMO sugar beets are grown in the United States and Canada. In the United States, they play an important role in domestic sugar production. Studies have concluded the sugar from glyphosate-resistant sugar beets is molecularly identical to and so has the same nutritional value as sugar from conventional (non-GMO) sugar beets. The United States imports 30% of its sugar, while the remaining 70% is extracted from domestically grown sugar beets and sugarcane. More than 1 million acres of sugar beets are cultivated annually in the United States, with a market value at harvest exceeding $1 billion. GM sugar beets are grown by more than 95 percent of the nation's sugar beet farmers. Of the domestically grown sugar crops, over half of the extracted sugar is derived from sugar beets, and the rest from sugarcane. The glyphosate sprayed on GM beet fields significantly reduces weed growth, and thus has decreased the demand for migrant workers, who have historically been employed as seasonal workers to pull weeds on conventional sugar beet farms in the United States. According to Monsanto, more than 37,000 acres of Roundup Ready sugar beet had been planted in Canada by 2010.

History Glyphosate-resistant sugar beets were initially developed by Monsanto and KWS Saat prior to 2000. Food companies raised concerns about consumer response to GM-sourced sugar, and as a result seed companies chose not to pursue commercialization at that time. In 2005, the US Department of Agriculture-Animal and Plant Health Inspection Service (USDA-APHIS) deregulated glyphosate-resistant sugar beets after it conducted an environmental assessment and determined glyphosate-resistant sugar beets were highly unlikely to become a plant pest. Sugar from glyphosate-resistant sugar beets has been approved for human and animal consumption in multiple countries, but commercial production of biotech beets has been approved only in the United States and Canada. In 2007, GM sugar beets were commercialized and GM seed sold in the United States. In 2008/2009, 60% of the sugar beets grown in the US were GM. By 2009/2010, the percentage of GM beets had grown to 95%. In August 2010, commercial planting of GM sugar beets was suspended following a lawsuit and US district court revocation of their approval. In February 2011, the USDA-APHIS allowed GM sugar beet planting under a set of monitoring and handling requirements. In July 2012, after completing an environmental impact assessment and a plant pest risk assessment, the USDA deregulated Monsanto's Roundup Ready sugar beets. In 2015, The Hershey Company, historically a major buyer of beet sugar, switched to cane sugar for many products due to consumer concern about GMOs.

Controversies

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Genetically modified sugar beet

Start with the simplest possible case. Write down what Genetically modified sugar beet claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Genetically modified sugar beet before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Genetically modified sugar beet ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Genetically modified sugar beet

In research: Genetically modified sugar beet appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Genetically modified sugar beet in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Genetically modified sugar beet is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genetically modified organisms in agriculture, Sugar production, so understanding it makes those chapters shorter.
In everyday life: Look for Genetically modified sugar beet outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Genetically modified sugar beet in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Genetically modified sugar beet means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Genetically modified sugar beet out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Genetically modified sugar beet in simple terms?

Why does Genetically modified sugar beet matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Genetically modified sugar beet?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Genetically modified sugar beet.