Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 35, Problem 16TYK
The results from genetic studies of which of the following support the idea that plant form is not determined merely by the orientation of cell divisions?
- a. the gnom mutant of Arabidopsis, in which the first division of the zygote is symmetrical
- b. the tangled-1 mutant of maize, with its aberrant longitudinal division and normal leaves
- c. the KNOTTED-1 mutant in tomato plants, with its “super-compound” leaves
- d. the expression of the GLABRA-2 gene in root epidermal cells that do not develop root hairs
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The flower color of genetically identical hemp plants (clones) is purple
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gene O
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homozygous null mutation of gene Q
homozygous null mutations of genes P and Q
Answer Bank
plp
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You are a developmental geneticist studying flowering time variation in Arabidopsis. You perform a
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delayed flowering in long days
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same flowering in long days
early flowering in long days
Chapter 35 Solutions
Study Guide for Campbell Biology
Ch. 35 - Prob. 1IQCh. 35 - Prob. 2IQCh. 35 - Prob. 3IQCh. 35 - Prob. 4IQCh. 35 - Prob. 5IQCh. 35 - Prob. 6IQCh. 35 - Plant biologists use CRISPR-Cas technology to...Ch. 35 - Review the role of microtubules in the orientation...Ch. 35 - The following diagram depicting the ABC hypothesis...Ch. 35 - How does the indeterminate growth pattern of...
Ch. 35 - Prob. 2SYKCh. 35 - Which of the following is not a reason that...Ch. 35 - Prob. 2TYKCh. 35 - Prob. 3TYKCh. 35 - Prob. 4TYKCh. 35 - Prob. 5TYKCh. 35 - Prob. 6TYKCh. 35 - Prob. 7TYKCh. 35 - Which of the following is not a primary meristem?...Ch. 35 - Prob. 9TYKCh. 35 - Prob. 10TYKCh. 35 - Prob. 11TYKCh. 35 - You are a companion cell in an angiosperm. What...Ch. 35 - Prob. 13TYKCh. 35 - Prob. 14TYKCh. 35 - Prob. 15TYKCh. 35 - The results from genetic studies of which of the...Ch. 35 - Prob. 17TYKCh. 35 - Prob. 18TYK
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- 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_forwardA mutation that breaks which of the following genes would be most likely to produce theanthocyanless phenotype of the green-stem Wisconsin Fast Plants (meaning no purple stems):PAL, CHS, C3H, FLS, or DFR? Explain your reasoning.arrow_forwardIn a species of tree, seed color is determined by four independently assorting genes: A, B, C, and D. The recessive alleles of each of these genes (a, b, C, and d) produce abnormal enzymes that cannot catalyze a reaction in the biosynthetic pathway for seed pigment. This pathway is diagrammed as follows: A White precursor Yellow ----Orange----- Red --- Blue When both red and blue pigments are present, the seeds are purple. Trees with the genotypes Aa Bb Cc Dd and Aa Bb Cc dd were crossed. (a) What color are the seeds in these two parental genotypes? (b) What proportion of the offspring from the cross will have white seeds? (c) Determine the relative proportions of red, white, and blue offspring from the cross.arrow_forward
- Which 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_forwardCan you answer both questions please (b) Based on the ABC model, what would be the predicted phenotype of a double AB mutant? (c) In developing flowers of dioecious Spinach and Thalictrum, stamens are not developed in female flowers, and carpels are not developed in male flowers. What is the simplest model of ABC class gene expression that might explain this?arrow_forwardCan you answer both questions please (b) Based on the ABC model, what would be the predicted phenotype of a double AB mutant? (c) In developing flowers of dioecious Spinach and Thalictrum, stamens are not developed in female flowers, and carpels are not developed in male flowers. What is the simplest model of ABC class gene expression that might explain this? Whorl 1 Whorl 2 Whorl 3 Whorl 4 Wild type sepals petals stamens carpels A class gene Carpels stamens stamen carpel mutants B class gene Sepal Sepal carpel carpel C class gene Sepal petal petal sepal mutants mutantsarrow_forward
- Can you answer part a-c if its true or false a) the AP3 and PI show auto- and cross-regulatory interactions, as well as they form obligate heterodimers to carry out the B class gene function. Therefore, if there is no PI expression, AP3 expression alone is not sufficient for establishing the petal and stamen identities. b) Angiosperm is a group of plants whose seeds are borne within a mature ovary (fruit). c) The organ in different organisms under every variety of forms and functions due to evolutionary development from the same or a corresponding part in a common ancestor is homologous.arrow_forwardAccording to data from genome sequences, cytoplasmic dynein is absent in some plants (e.g.,Arabidopsis) and present in others (e.g.,rice).Does this finding surprise you? What else might you do to confirm or refute such a statement? How is it possible that higher plant cells could operate without cytoplasmic dynein?arrow_forwardA close relative of this flower has very large sepals compared to this one. Apply what you know about morphogenesis in plants to make a hypothesis of how A close relative of this flower has very large sepals compared to this one. Apply what you know about morphogenesis in plants to make a hypothesis of how gene expression might differ in the relative compared to this plant. Be sure to relate it to the figure above. in the relative compared to this plant. Be sure to relate it to the figure above.arrow_forward
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