- Modern biotechnology techniques for developing GMOs include gene insertion (transgenics), gene editing (removal, insertion, modification), and techniques controlling gene expression like gene silencing (RNAi). - While mutation is the source of genetic variation, the deliberate introduction of mutations (especially targeted ones) is part of genetic modification.
Genetically modified organisms are developed in modern biotechnology using which of the following techniques? 1. Insertion of genes from other organisms. 2. Removal of part of the genes. 3. Introduction of gene mutations. 4. Silencing of some gene/genes. Select the correct answer by choosing the codes given below:
Asked in KPSC KAS Prelims 2014 · Topic: Genetic Engineering and Biotechnology (Gene Editing Technologies: CRISPR-Cas System, TALENs, ZFNs)
More Biology questions
- What is Cas9 protein that is often mentioned in news?
- Genetically modified (GM) crops contain modified genetic material due to : introduction of new DNA removal of existing DNA introduction of RNA introduction of new traits Select the correct answer using the code given below:
- The first transgenic plant produced was __________.
- Which of the following statements are correct regarding Cloning? 1. Human Cloning is performed by the Somatic cell 2. A somatic cell means, any cell of the body except sperm and egg 3. In reproductive cloning, the newly created embryo will be placed in a test tube 4. In case of cloning the child is born of a single parent and carries his/her DNA
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- Which of the facts about Dolly (sheep), the first mammal cloned form an adult somatic cell is not correct ?
- Consider the following techniques/ phenomena: 1. Budding and grafting in fruit plants 2. Cytoplasmic male sterility 3. Gene silencing Which of the above is/are used to create transgenic crops?
- Budding and grafting in fruit plants: These are methods of asexual (vegetative) propagation used to combine traits from different plants or propagate desired varieties. They do not involve introducing foreign genes to create a transgenic organism. This is not used to create transgenic crops. 2. Cytoplasmic male sterility: While CMS itself is a biological phenomenon used in hybrid breeding, genetic engineering techniques can be used to introduce or restore male sterility genes (like the barnase/barstar system), thereby creating transgenic plants with engineered CMS. In this context, the concept is linked to the creation of transgenics for breeding purposes. 3. Gene silencing: Techniques like RNA interference (RNAi) are methods of gene silencing where the expression of a specific gene is inhibited.