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Give the two name of cry gene which cont...

Give the two name of cry gene which control the cotton bollworms :-

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### Step-by-Step Solution: 1. **Understanding Cry Genes**: Cry genes are specific genes that code for proteins known as Cry proteins, which are toxic to certain insects. These proteins are derived from the bacterium *Bacillus thuringiensis* (Bt). 2. **Role of *Bacillus thuringiensis***: *Bacillus thuringiensis* is a bacterium that produces these Cry proteins. When these proteins are expressed in plants, they help in protecting the plants from insect pests. 3. **Application in Cotton**: In the context of cotton, these Cry proteins are used to control pests like cotton bollworms. The cotton plants are genetically modified to express these Cry proteins. 4. **Pro-toxin Activation**: The Cry proteins are initially produced in an inactive form known as pro-toxins. When cotton bollworms ingest these pro-toxins, they are activated in the insect's gut. 5. **Toxic Effect on Cotton Bollworms**: Once activated, the Cry proteins bind to specific receptors in the gut of the cotton bollworms, leading to their death. This makes the plant resistant to these pests. 6. **Identifying Specific Cry Genes**: The two specific Cry genes that are known to control cotton bollworms are: - **Cry1AC** - **Cry2AB** ### Final Answer: The two names of Cry genes that control the cotton bollworms are **Cry1AC** and **Cry2AB**. ---
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Which of the following cry gene codes for a protein which can control the cotton bollworms?

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Assertion: The choice of cry-gene depends upon the crop & the targeted pest Reason :Gene cry Iac & cry II Ab control the cotton bollworms while cry Iab controls corn borer

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The protein encoded by which gene control bollworm:

Read the following and answer questions from Q.1. to Q.5. given below: Plants having foreign genes in their genome through genetic engineering are called transgenic plants. Genes can be incorporated either through a vector or through direct introduction of DNA. Bt cotton is a genetically modified organism which is pestresistant. It contains gene cry I Ac and cry II Ab of Bacillus thuringiensis. It is used to control lepidopterans, coleopterans and dipterans. Bt cotton can resist cotton bollworm and produce higher yields. Cry gene produces cry protein or Bt toxin. It is an endotoxin which remains as protoxin in plants and converted to active toxin after getting ingested by the insects. Alkaline pH of the insect gut solubilizes the protein crystals, the activated toxin creates pores to the mid guts wall of theinsects which cause them to death. Cotton bollworms are killed by the protein encoded by the gene

The variant of cry genes used to control corn borers is