Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 38.3, Problem 2R
Summary Introduction
To review:
The types of genes that can be added to the genomes of the crop plants to increase their salt tolerance and the functioning of these genes to tolerate high concentrations of salt.
Introduction:
High salt concentration in the environment has become a global problem as due to the high amount of NaCl (sodium chloride) various enzymes in plants are inhibited. Also, the protein synthesis is inhibited in these plants due to sodium toxicity. To increase the tolerance of plants against this increased soil concentration, certain genes are introduced in these plants.
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List at least three different properties that have been acquired by crop plants via genetic engineering.
Consider the following hypothetical gene a plant g&T produces a protein that impacts the stem length. There are two alleles for GT which produces long stem and tea little tea which results in short stint. Which of the following genome types above would have a different pheno type? And what would the phenotype be for the genotype?
Why plant breeders intend to change the inheritance of crop plants? How plant breeders can change the heredity of crop plants? Explain your answer in briefly.
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Life: The Science of Biology
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- In most parts of the world, commercial potato crops are produced asexually by planting tubers. However, in some regions of the world, such as Southeast Asia and the Andes, some potatoes are grown from true seeds. Discuss the advantages and disadvantages of growing potatoes from true seed.arrow_forwardAn important goal of molecular botanists is to insert the genes for nitrogen fixation into crop plants such as corn or wheat. Why would the insertion of such genes be useful? What changes in farming practices would this technique allow?arrow_forwardPlant scientists can use Agrobacterium to put other genes into plant chromosomes. Explain?arrow_forward
- There is a strict conditions that should be met before genetic engineering in plant crops could be successful, which of the following is true? * A. there should be a large number of genes B. genes that would be added should be specified C. genes that would be added should be mixed with other desirable genes D. the laboratory conditions should have ample oxygenarrow_forwardWhat are the function of mutation in plant breeding?arrow_forwardSemi-dwarf varieties of a crop plant were derived from IR-8. Name that crop.arrow_forward
- in flowering control of plant, describe a situation wherein there are mutations in at least one or all of the genes responsible for control of the floral development.arrow_forwardIn roses, the synthesis of red pigment is by two steps ina pathway, as follows:colorless intermediate gene Pmagenta intermediate red pigment gene Qa. What would the phenotype be of a plant homozygousfor a null mutation of gene P?b. What would the phenotype be of a plant homozygousfor a null mutation of gene Q?c. What would the phenotype be of a plant homozygousfor null mutations of genes P and Q?d. Write the genotypes of the three strains in parts a, b,and c.e. What F2 ratio is expected from crossing plants fromparts a and b? (Assume independent assortment.)arrow_forwardWhat are the function of sugarcane in plant breeding?arrow_forward
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