Unwinding of DNA Double Helix: Addition of Primer to the DNA helix: Polymerization of nucleotides for the formation of new DNA strands: Summary of DNA polymerase enzyme: Enzyme DNA pol I DNA pol II DNA pol III 5’– 3’ polymerase Yes Yes Yes 3’ — 5’ exonuclease Yes Yes Yes 5’ — 3’ exonuclease Yes […]
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The three different DNA replication models suggested by scientists include: Conservative model of DNA: According to this model the parental DNA will be conserved in the next generation. For example, a cell containing a double stranded parental DNA (represented by black color) will divide by mitosis into two daughter cells. Now, one daughter cell will
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Origin of 2019-nCov Transmission of 2019-nCov Who is at Risk of Novel Coronavirus Symptoms of Novel Coronavirus Diagnosis of Novel Coronavirus Treatment of Novel Coronavirus How to Prevent Transmission of Coronavirus Myths about Coronavirus
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Introduction Structure of DNA The structure of DNA was first revealed through the extraction of nuclein by Meischer. Later, it was identified as nucleic acid, a polymer of nucleotides. These nucleotides are composed of phosphate, sugar, and nitrogenous bases. Watson and Crick’s model of DNA in 1953 demonstrated its double-helix form, a critical structure for
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Following experiments were done to prove that DNA was the genetic material: Griffith Experiment in Search for the Genetic Material Avery, McLeod and McCarty Experiment in Search for the Genetic Material Hershey and Chase Experiment in Search for the Genetic Material
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Q1. Which of the following factors contributed to green revolution? Ans: 3 Q2. Which of the following are the advantages of GM plants? Ans: 5 Q3. Golden rice is genetically modified rice, which is enriched in: Ans: 2 Q4. Agrobacterium tumifaciens cause crown gall in: Ans: 1 Q5. Which of the following is true for
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The applications of biotechnology include: Q1. Which of the following factors contributed to green revolution? Ans: 3 The second time, food production was increased by organic farming i.e., by the use of manures, biofertilizers, biopesticides, etc. The third time, or in the recent time, the food production has been increased by the use of genetically
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Q1. Which of the following technology comes under classical / traditional biotechnology? Ans: 4 Q2. Which of the following technology does not come under modern biotechnology? Ans: 4 Q3. The EFB stands for: Ans: 1 The EFB is located in Spain. Q4. Which of the following comes under modern biotechnology? Ans: 4 Q5. Which of
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MEANING OF BIOTECHNOLOGY In this section, I’m going to discuss the chapter 11 of NCERT class XII i.e., BIOTECHNOLOGY: PRINCIPLES AND PROCESSES (PAGE-192-205). This is a very important chapter from the examination point of view. I will make this chapter very simple and easy to understand. When you read the NCERT book, the content
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(C) RECOMBINANT DNA TECHNOLOGY (A) ISOLATION OF DNA: What could be the source of the genetic material to be used in the genetic engineering / recombinant DNA technology? Well, we can extract DNA from various sources such as plant cells, animal cells, bacterial cells and fungal cells, to name only a few. Now, since DNA
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