Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 13.1, Problem 3CC
WHATIF? → A horticulturalist breeds orchids, trying to obtain a plant with a unique combination of desirable traits. After many years, she finally succeeds. To produce more plants llke this one, should she crosibreed it with another plant or clone it? Why?
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Genetic engineering of plants provides an opportunity to alter their properties or performance in order to improve upon their utility. Such technology may be used to modify the expression of genes already present in the plants, or to introduce new genes of other species with which the plant cannot be bred conventionally. In fact, humans have engaged in genetic manipulation for millennia, producing plant and animal varieties through selective breeding and hybridization that significantly modify genomes of organisms. How has this technology created novel genetic information by specific alteration of cloned genes? (provide an example). Why do you think modern genetic engineering, has met with so much opposition? Should some forms of genetic engineering be of greater concern than others? Explain. In your response provide a specific example from literature to describe the implications of this technology (good or bad).
From an agricultural point of view, discuss the advantages and disadvantagesof selective breeding. It is common for plant breeders to take two different, highly inbred strains, which are the product of many generations of selective breeding, and cross them to make hybrids. How does this approach overcome some of the disadvantages of selective breeding?
The aim of a research project is to produce a hybrid plant having resistance to disease. The disease resistance trait is cytoplasmically encoded. The parent plants which are chosen for the development of the hybrid are sexually incompatible. Which tissue culture technique will be used to produce a hybrid using these sexually incompatible parents.
Chapter 13 Solutions
Campbell Biology (11th Edition)
Ch. 13.1 - MAKE CONNECTIONS Using what you know of gene...Ch. 13.1 - How does an asexually reproducing eukaryotic...Ch. 13.1 - WHATIF? A horticulturalist breeds orchids, trying...Ch. 13.2 - MAKE CONNECTIONS In Figure 13.4. how many DNA...Ch. 13.2 - VISUAL SKILLS In The karyotype shown in Figuro...Ch. 13.2 - WHAT IF? A certain eukaryote lives as a...Ch. 13.3 - MAKE CONNECTIONS Comparc tho chromosomes in a...Ch. 13.3 - WHAT IF? After the synaptonemal complex...Ch. 13.4 - What is the original source of Variation among the...Ch. 13.4 - The diploid number for fruit flies is 8, and the...
Ch. 13.4 - Prob. 3CCCh. 13 - Explain why human offifuing resemble their parents...Ch. 13 - Compare the life cycles of animals and plants,...Ch. 13 - Prob. 13.3CRCh. 13 - Prob. 13.4CRCh. 13 - A human cell containing 22 autosomes.and a Y...Ch. 13 - The two homologs of a pair move toward opposite...Ch. 13 - Meiosis II is similar to mitosis in that (A)...Ch. 13 - Prob. 4TYUCh. 13 - If we continue to follow the cell lineage from...Ch. 13 - DRAW IT The diagram shows a cell in meiosis. (a)...Ch. 13 - Explain how you can tell that the cell in question...Ch. 13 - EVOLUTION CONNECTION Many species can reproduce...Ch. 13 - SCIENTIFIC INQUIRY The diagram in quest ion 6...Ch. 13 - Prob. 10TYUCh. 13 - SYNTHESIZE YOUR KNOWLEDGE For selected answers,...
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- Trace the genetic steps in the development of a peanut plant that isresistant to insect larvae (table given). (Hint: You need to useAgrobacterium.)arrow_forward. A geneticist working on a haploid fungus makes a cross between two slow-growing mutants called mossy and spider (referring to the abnormal appearance of the colonies). Tetrads from the cross are of three types (A, B, C), but two of them contain spores that do not germinate.Devise a model to explain these genetic results, and propose a molecular basis for your model.arrow_forwardThe genetic modification of plants for food is a hot-button issue around the world. Genes transplanted to corn, potato, soybean, and other food strains can confer desired traits, such as resistance to pests, which lessens the need for toxic pesticides. Though genetically modified foods are thought to be safe to eat, their impact on the environment may not be fully known. Do you worry about the long-term effects of genetically modified foods on your health, or the health of the environment? Do the positive impacts outweigh the negatives?arrow_forward
- the photos below show flowers from two Arabidopsisplants. The plant on the left is wild-type (unmutated); theother carries a mutation that causes its flowers to havesepals and petals instead of stamens and carpels. Themutation inactivated one of the plant's ABC floral identity genes. Refer to Figure 10.8 and decide which gene(A, B, or C) has been inactivatedarrow_forwardstudent.masteryconnect.com Biology 1 Assessment 3 26 of 40 21 22 23 24 25 26 27 28 29 30 Finish Miller, Timia Polyploid plants form as a result of a beneficial mutation that often makes them larger and stronger than diploid plants. These plants form when a complete set of chromosomes fails to separate during meiosis creating plants with extra chromosomes. What type of mutation has this result? O frameshift O nondisjunction substitution O translocation esc 4. 5narrow_forwardWould you simply answer the question for me, i saw many answers for it but still not sure. The flower color of genetically identical hemp plants (clones) is purple when the flowers develop under cold environment (30 °C). Describe in detail a molecular mechanism that could explain how these two groups of genetically identical plants differ in their gene expressions to produce different flower colors?arrow_forward
- You are a developmental geneticist studying flowering time variation in Arabidopsis. You perform a mutagenesis screen to identify mutants in the photoperiod pathway. You conduct the screen and find two different plants that show the same mutant phenotype. You then use a complementation test. What is the predicted outcome of this test if both phenotypes are caused by mutations in separate genes? recover the wild type phenotype overexpress the gene O recover the mutant phenotypearrow_forward. In the plant Arabidopsis thaliana, a geneticist is interested in the development of trichomes (small projections). A large screen turns up two mutant plants (A and B) that have no trichomes, and these mutants seem to be potentially useful in studying trichome development. (If they were determined by single-gene mutations, then finding the normal and abnormal functions of these genes would be instructive.) Each plant is crossed with wild type; in both cases, the next generation (F1) had normal trichomes. When F1 plants were selfed, the resulting F2’s were as follows: F2 from mutant A: 602 normal; 198 no trichomes F2 from mutant B: 267 normal; 93 no trichomesa. What do these results show? Include proposed genotypes of all plants in your answer. b. Under your explanation to part a, is it possible to confidently predict the F1 from crossing the original mutant A with the original mutant B?arrow_forwardHow has the wild version of a avocado plant been modified for human consumption ? what parts of the plants have been modified from the wild version, and how---selective breeding, genetic modification? Explain.arrow_forward
- %3D 14/15 What is the WORST question for a farmer to ask when determining whether or not to grow transgenic plants? Will the transgenic Will the transgenic plant help to Will the transgenic plant offer any Will the transgenic plant require more pesticides? plant help the farmer to produce information in increase the food studying human genes? supply? more clones? Music off Zoom In • O 8:25 Sign out Lenovo & 4. 5arrow_forward. Genomes A, B, and C all have basic chromosomenumbers (x) of nine. These genomes were derivedoriginally from plant species that had diverged from each other sufficiently far back in the evolutionarypast that the chromosomes from one genome can nolonger pair with the chromosomes from any other genome. For plants with the following kinds of euploidchromosome complements, (i) state the number ofchromosomes in the organism; (ii) provide terms thatdescribe the individual’s genetic makeup as accurately as possible; (iii) state whether or not it is likelythat this plant will be fertile, and if so, give the number of chromosomes (n) in the gametes.a. AABBCb. BBBBc. CCCd. BBCCe. ABCf. AABBCCarrow_forwardWhich of the following BEST states genome editing in plants? A. transform large DNA constructs by suppression and activation B. insert a functional cis-regulatory element in the natural genes transgene vector C. assemble and synthesize large DNA molecules in a single transgene vector D. deletion, mutation, or integration of the gene of interest depending on the target traitarrow_forward
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