BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
12th Edition
ISBN: 9781264058167
Author: Raven
Publisher: MCG CUSTOM
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Chapter 40.2, Problem 3LO
Summary Introduction
To explain: The relationship between floral meristem identify genes and floral organ identify genes.
Introduction: The plants are the multicellular eukaryotic organism in the kingdom Plantae. It is characterised by photosynthetic nutrition, a process through which it synthesis carbohydrates, essential unlimited growth at localised region, presence of cellulose in their cell wall and absence of locomotory organs.
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You are a developmental geneticist and perform a mutagenesis screen in Arabidopsis looking for
floral organ mutants. You identify a mutant phenotype that has the following organ arrangement,
beginning in whorl 1:
Sepal-Sepal-Carpel-Carpel
Which class of floral identity genes has been mutated?
A-B double mutant
O A
O
SEPALLATA
B
с
Using the 'ABC model' of floral development, what would you expect the flowers of a mutant plant to look like if both A & B gene function had been destroyed?
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?
Chapter 40 Solutions
BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
Ch. 40.1 - Prob. 1LOCh. 40.1 - Prob. 2LOCh. 40.1 - Prob. 3LOCh. 40.2 - Name the four genetically regulated flowering...Ch. 40.2 - Define floral determination.Ch. 40.2 - Prob. 3LOCh. 40.3 - Prob. 1LOCh. 40.3 - Prob. 2LOCh. 40.3 - Prob. 3LOCh. 40.4 - Prob. 1LO
Ch. 40.4 - Prob. 2LOCh. 40.4 - Prob. 3LOCh. 40.5 - Prob. 1LOCh. 40.5 - Prob. 2LOCh. 40.5 - Prob. 3LOCh. 40.6 - Prob. 1LOCh. 40.6 - Prob. 2LOCh. 40.7 - Prob. 1LOCh. 40.7 - Prob. 2LOCh. 40.7 - Prob. 3LOCh. 40.8 - Prob. 1LOCh. 40.8 - Prob. 2LOCh. 40.8 - Prob. 3LOCh. 40 - Prob. 1DACh. 40 - Prob. 1IQCh. 40 - Prob. 2IQCh. 40 - Prob. 3IQCh. 40 - Morphogenesis is the development of a. growth...Ch. 40 - Vernalization induces flowering following exposure...Ch. 40 - Prob. 3UCh. 40 - Which of the following is NOT a component of a...Ch. 40 - Megasporcs are produced in a. anthers by mitosis....Ch. 40 - A stamen contains a a. style. b. stigma. c....Ch. 40 - Unlike bee-pollinated flowers, bird-pollinated...Ch. 40 - Prob. 8UCh. 40 - Endosperm is produced by the union of a. a central...Ch. 40 - During the globular stage of embryo development,...Ch. 40 - Which of the following is NOT a primary meristem?...Ch. 40 - Prob. 12UCh. 40 - The shoot tip of an emerging maize seedling is...Ch. 40 - Asexual reproduction is likely to be most common...Ch. 40 - Prob. 15UCh. 40 - Prob. 16UCh. 40 - Prob. 17UCh. 40 - Prob. 1ACh. 40 - Your roommate is taking biology with you this...Ch. 40 - In Iowa, a company called Team Corn works to...Ch. 40 - Prob. 4ACh. 40 - One of the most notable differences between gamete...Ch. 40 - A plant lacking the WOODEN LEG gene will likely a....Ch. 40 - How would plant development change if the...Ch. 40 - Prob. 8ACh. 40 - Loss-of-function mutations in the suspensor gene...Ch. 40 - Prob. 1SCh. 40 - If you live in a north temperate region, explain...Ch. 40 - In wild columbine flower morphology encourages...Ch. 40 - In most part of the world, commercial potato crops...Ch. 40 - Design an experiment to determine whether light or...
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- There is a possibility that gene flow due to cross-pollination may occur between crop plants genetically modified to be herbicide resistant and neighboring wild plants. Why would this be a problem?arrow_forwardlist all gamets that could be made by a pea plant heterozygous for seed colour, seed shape and pod shape(Yy, Rr, Ii) what size punnett square would you need to determine offspring of self pollination of this hybridarrow_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 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_forwardWhen 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?arrow_forwardMonoecious plants such as corn have either staminate or carpelate flowers. Knowing what you do about the molecular mechanisms of floral development, which of the following might explain the development of single-sex flowers? a. Expression of B-type genes in the presumptive carpel whorl will generate staminate flowers. b. Loss of A-type genes in the presumptive petal whorl will allow C-type and B-type genes to produce stamens instead of petals in that whorl. c. Restricting B-type gene expression to the presumptive petal whorl will generate carpelate flowers. d. All of the choices are correct.arrow_forward
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