CAMPBELL BIO-MOD.MASTERING ACCESS
1st Edition
ISBN: 9780135351789
Author: Urry
Publisher: PEARSON C
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Chapter 35, Problem 5TYU
Supposc a flower had normal expression of genes A and C and expression of gene B in all four whorls. Based on the ABC hypothesis, what vvould be the structure of that flower, starting at the outermost whorl?
- (A) carpel-petal-petal-carpel
- (B) petal-petal-stamen-stamen
- (C) sepal-carpel-carpel-sepal
- (D) sepal-sepal-carpel-carpel
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In some species, such as magnolia, sepals look like petals, and both are collectively called "tepals:' Suggest an extension to the ABC model that could hypothetically account for the origin of tepals.
from the fruit of wild daisy, there are hair like structures, what do these structures represent in the flower from which the fruit was derived?
Monoecious 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.
Chapter 35 Solutions
CAMPBELL BIO-MOD.MASTERING ACCESS
Ch. 35.1 - Prob. 1CCCh. 35.1 - WHAT IF? If humans were photoautotrophs, making...Ch. 35.1 - Prob. 3CCCh. 35.2 - Prob. 1CCCh. 35.2 - Prob. 2CCCh. 35.2 - Prob. 3CCCh. 35.3 - Prob. 1CCCh. 35.3 - Prob. 2CCCh. 35.3 - Prob. 3CCCh. 35.4 - A sign is hammered into a tree 2 m from the tree's...
Ch. 35.4 - Prob. 2CCCh. 35.4 - Would you expect a tropical tree to have distinct...Ch. 35.4 - Prob. 4CCCh. 35.5 - How can two cells in a plant have vastly different...Ch. 35.5 - Prob. 2CCCh. 35.5 - Prob. 3CCCh. 35 - Prob. 35.1CRCh. 35 - Prob. 35.2CRCh. 35 - Prob. 35.3CRCh. 35 - Whht advantages did plants gain from the evolution...Ch. 35 - Prob. 35.5CRCh. 35 - Most of the growth of a plant body is the result...Ch. 35 - Prob. 2TYUCh. 35 - Prob. 3TYUCh. 35 - The phase change of an apical meristem from the...Ch. 35 - Supposc a flower had normal expression of genes A...Ch. 35 - Prob. 6TYUCh. 35 - Which of the following would not be seen in a...Ch. 35 - Prob. 8TYUCh. 35 - EVOLUTION CONNECTION Evolutionary biologists have...Ch. 35 - SCIENTIFIC INQUIRY Grasslands typically do not...Ch. 35 - SCIENCE, TECHNOLOGY, AND SOCIETY Hunger and...Ch. 35 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 35 - SYNTHESIZE YOUR KNOWLEDGE This stained light...
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- In some species, sepals look like petals, and both are collectively called “tepals.” Suggest an extension to the ABC hypothesis that could account for tepals.arrow_forwardExamine the variegated leaf shown in Figure Q14–3.Yellow patches surrounded by green are common, butthere are no green patches surrounded by yellow. Proposean explanation for this phenomenon.arrow_forwardTom studies the floral identity genes. He found a mutant only develop flowers with two whorls of sepals and two whorls of carpels. Which may class(s) of floral homeotic genes be affected based on the ABC model? ______________. (A) A class genes (B) B class genes (C) C class genes (D) E class genesarrow_forward
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- What would the roots look like if GLABRA-2 wererendered dysfunctional by a mutation?arrow_forwardWhat is the differencebetween the lateral and theapical buds of the plants?arrow_forwardWhat is the difference between self-pollination and cross-pollination? If pollen is transferred from the stamens of a flower to the stigma of the very same flower, is that cross-pollination or self-pollination? If it is transferredfrom the stamen of one flower to the stigma of another flower on the very same plant? If it is transferred from the stamen of one flower to the stigma of another flower on a different plant, but a plant that is a clone of the first one? Animals do not have pollen, of course, but why is it that most animals never have to worry about the equivalent problem of self-fertilization? Why cannot most animals fertilize themselves?arrow_forward
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