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Q: If only 4 or 5 genes are responsible morphological difference between teosinte and maize, why does…
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Q: What arre the function of wheat and rice in plant breeding?
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Q: A. Dr. Doebley and his team compared the DNA sequence of maize to that of a number of teosinte…
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Q: A mutation that breaks which of the following genes would be most likely to produce the…
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Q: Name any five hybrid varieties of crop plants which have been developedin India.
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Q: When working on barley plants, two researchers independently identify a short-plant mutation and…
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Q: How did archaeological evidence helped the genetic evidence to determine the timing and location of…
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Q: What is the difference between a transgenic plant and a plant produced through selective breeding?
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Q: Show seven parts of constarsting traits in pea plant studied by mendal?
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Q: How can mutations cause changes to the traits? Explain using the following steps: 1- DNA 2- Gene…
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Q: Why are most U.S. corn and soybeans GM varieties?
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Q: Which is a transgenic food crop which may help in solving the problem of night blindness in…
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Q: Because B. rapa is an annual plant, the one rosette individual dies. Cyndi would like to continue…
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Q: Golden rice is a genetically modified crop plant where the incorporated gene is meant for what?
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With which trait golden rice is a transgenic crop of the future?
In the genetically modified crops, the DNA of plants is modified by using methods of genetic engineering to introduce a new trait, a trait that does not naturally occur in the plants. For example, food crops are made resistance to diseases, pests, environmental conditions, or to improve the nutrient value of a crop.
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- What is the difference between a transgenic plant and a plant produced through selective breeding?What is mutation? Explain the significance of mutation in plant breeding. Give an example of a disease resistant variety of cultivated plant induced by mutation.Golden rice is promising transgenic crop. When released for cultivation, for what purpose it will help?
- A. Dr. Doebley and his team compared the DNA sequence of maize to that of a number of teosinte varieties from throughout Mexico. What did their analysis reveal? B. Teosinte looks like a terrible plant to begin to domesticate for agricultural purposes. What hypothesis is put forth to explain farmers’ early interest in the plant?When working on barley plants, two researchers independently identify a short-plant mutation and develop homozygous recessive lines of short plants. Careful measurements of the height of mutant short plants versus normal tall plants indicate that the two mutant lines have the same height. How would you determine if these two mutant lines carry mutation of the same gene or of different genes?How did archaeological evidence helped the genetic evidence to determine the timing and location of maize domestication?
- Cyndi grows thousands of B. rapa plants from seed and carefully watches for any unusual plants that might be a new mutation. She has been watching a small seedling whose leaves continue to develop, but the stem is not elongating. The result is a cluster, or rosette, of leaves sitting just above the soil surface. After 15 days the plant is beginning to produce flowers but is still a rosette. Cyndi is encouraged and hypothesizes that rosetteis a recessive mutation. -Describe the first cross she should make and the predicted results. Because B. rapa is an annual plant, the one rosette individual dies. Cyndi would like to continue her study of this mutation, but all od the offspring from her original cross were normal. There are no more plants with the rosette mutation. -What can Cyndi do to continue her investigation of rosette? What would be the results of these "next steps"? -What results would you expect if Cyndi crosses her new generation of rosette plants with a known heterozygous…What does an improved variety of transgenic basmati rice contains?What do you know about transgenic crops. Explain in detail with examples.
- What modern-day problem can be solved by Genetic Engineering? Explain the unique characteristics will be exhibited by the GMO that will solve the problem. Briefly describe each.How recombinant DNA technology revolutionized the field of crop genetics? Explain with suitable examples.Development of a transgenic food crop may help in solving the problem of night blindness in the developing countries, name this crop plant.