BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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Chapter 38.2, Problem 1EQ
Summary Introduction
To describe: The advantages obtained by the plants due to the expression of gene SQD1.
Introduction: John Hammond and his colleagues identified certain genes whose expression changes when plants are transferred from the solutions containing phosphorus to the solution lacking phosphorous. These researchers identified certain genes that turned on quickly after removing phosphorus while other genes took longer time for activation.
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In roses, the synthesis of red pigment is produced by two steps in a pathway.
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What would the phenotype be of a plant homozygous for a null mutation of gene P?
What would the phenotype be of a plant homozygous for a null mutation of gene Q?
What would the phenotype be of a plant homozygous for null mutations of genes P and Q?
magenta
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colorless
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homozygous null mutations of genes P and Q
Answer Bank
plp
PIP
What F2 ratio is expected from crossing a plant that is homozygous for a null mutation of gene P with a plant that is
homozygous for a null mutation of gene Q? Assume independent assortment.
9 colorless : 4 magenta : 3 red
9 red : 4 colorless : 3 magenta
O 9 red : 4 magenta : 3 colorless
If Gus is present in the Arabidopsis Thaliana what is it indicating? I know its to show gene expression, but what is the importance of that? I hope this makes sense
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.
Chapter 38 Solutions
BIOLOGY
Ch. 38.1 - Prob. 1CCCh. 38.1 - Prob. 2CCCh. 38.2 - Prob. 1CCCh. 38.2 - How might soil crusts influence the ecology and...Ch. 38.2 - Prob. 3CCCh. 38.2 - Prob. 1EQCh. 38.2 - Prob. 2EQCh. 38.3 - Prob. 1CSCh. 38.3 - Prob. 2CSCh. 38 - Which of the following substances can limit plant...
Ch. 38 - In what form do plants take up most soil minerals?...Ch. 38 - Prob. 3TYCh. 38 - Soil organic matter provides the benefit of a....Ch. 38 - Prob. 5TYCh. 38 - Which property is not characteristic of clay-rich...Ch. 38 - Prob. 7TYCh. 38 - Prob. 8TYCh. 38 - Prob. 9TYCh. 38 - Which plant uses a passive trap to obtain animal...Ch. 38 - Prob. 1CQCh. 38 - Prob. 2CQCh. 38 - Prob. 3CQCh. 38 - Prob. 1COQCh. 38 - Prob. 2COQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- You are a developmental geneticist studying flowering time variation in Arabidopsis. You perform a mutagenesis screen to identify mutants in the photoperiod pathway. Given what you know about photoperiodism in Arabidopsis, what phenotype are you looking for and under what photoperiodic conditions would you perform the experiment? delayed flowering in long days delayed flowering in short days same flowering in short days early flowering in short days same flowering in long days early flowering in long daysarrow_forwardWhat will be the flower structure of a plant in which expression of the following genes is inhibited in the specified whorls? Q. Expression of class B genes is inhibited in the second whorl, but not inthe third whorl.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_forward
- Can you solve all the parts to this question please a) What is the role of the LEAFY gene in floral development? (b) What is the phenotype of the leafy mutant? (c) Most of the ABC program genes are directly regulated by the transcription factor LEAFY (LFY). Still, LFY is expressed broadly throughout the floral meristem when the discrete A, B, and C domains are established. Discuss how this single broadly expressed transcription factor can generate distinct domains of ABC gene expression. Feel free to use diagrams.arrow_forwardWhat will be the flower structure of a plant in which expression of the following genes is inhibited in the specified whorls? Q. Expression of class A genes is inhibited in the second whorl, but not in the first whorl.arrow_forwardGreen fluorescent protein (GFP) can attach and mark other proteins with fluorescence, enabling scientists to see the presence of a particular protein. In an experiment to understand the molecular physiology behind the GA-induced seed germination, a GFP-tagged protein was observed to be moving from the cytoplasm into the nucleus of aleurone layer cells before the detection of alpha-amylase in the endosperm. Based on your knowledge, identify the possible protein(s) with which the GFP is attached in the given situation. Justify your answer.arrow_forward
- What is germplasm? Why is it necessary to have gemplasm collection?arrow_forwardWhat are three types of signaling processes based on their transduction distance? Give an example for each type. What are the signaling molecules in the plant? Please describe each of them briefly.arrow_forwardCells in the stem of a seedling that is grown in the dark orient their microtubules horizontally. How would you expect this to affect the growth of the plant?arrow_forward
- If a winter-annual strain of Arabidopsis is grown in a greenhouseand not exposed to cold temperatures, its ability to flower is inhibited.Which gene is responsible for this inhibition?arrow_forwardMany plants increase in freezing tolerance upon exposure to low nonfreezing temperatures. Rye, for instance, is killed by freezing at about -5°C, but after a period of exposure to low nonfreezing temperature can survive freezing down to about -30°C. When exposed to low temperatures, plants exhibit an increased expression of certain cold-induced genes that function to stabilize cell membranes against freeze-induced injury. The ability of an individual plant to develop freezing tolerance is best described as an example of: O Acclimation Allopatric speciation O Mutation Genetic drift OAdaptation Freeze-induced cellular dehydrationarrow_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_forward
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