Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 36.5, Problem 1SB
What is a homeobox gene? Give at least two examples of plant tissues such genes might govern in a species such as A. thaliana.
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The drooping, bell-like flower Aquilegia canadensis is adapted for cross-pollination. However, if the plant has not been pollinated previously, self-pollination can occur. However, if cross pollination occurs after self-pollination takes place, the pollen from cross pollination reaches the style before the pollen from self-pollination. Using course concepts and vocabulary 1) Provide a reasoning for this phenomenon. 2) Would this adaptation for reproduction be beneficial for the plant?
Chapter 36 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 36.1 - What are the two alternating generations of...Ch. 36.1 - Prob. 2SBCh. 36.2 - Prob. 1SBCh. 36.2 - Explain the steps leading to the formation of a...Ch. 36.2 - Trace the development of a female gametophyte,...Ch. 36.3 - Explain the sequence of events in a flowering...Ch. 36.3 - Prob. 2SBCh. 36.3 - Prob. 3SBCh. 36.4 - Prob. 1SBCh. 36.4 - Prob. 2SB
Ch. 36.5 - What is a homeobox gene? Give at least two...Ch. 36.5 - Prob. 2SBCh. 36.5 - Prob. 3SBCh. 36 - In an angiosperm life cycle, sexual reproduction...Ch. 36 - Prob. 2TYKCh. 36 - Prob. 3TYKCh. 36 - From a developmental standpoint, a seed is best...Ch. 36 - Prob. 5TYKCh. 36 - Prob. 6TYKCh. 36 - Prob. 7TYKCh. 36 - Which of the following is not an example of...Ch. 36 - Prob. 9TYKCh. 36 - Prob. 10TYKCh. 36 - Prob. 11TYKCh. 36 - Prob. 12TYKCh. 36 - Prob. 13TYKCh. 36 - Prob. 14TYKCh. 36 - Prob. 1ITDCh. 36 - Prob. 2ITDCh. 36 - Prob. 3ITD
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- What is the state of traditional herbal medicine in the Philippines with regards to reasearch and development?arrow_forwardThe ABCDE Model of flower development dictates the combination of transcription factors require to initiate each whorl of a flower. Based on the diagram below, what would happen if: Carpels and ovules Sepal Petal Stamen 2 4 Whorl A Genes E 25-40 The ABCDE model of floral organ determination in Arabidopsis In addition to the A-, B-, and C-function genes of the ABC model, this model includes two additional gene classes, D and E. In the ABCDE model, class A + E genes specify sepals; class A + B + E, petals; class B +C +E, stamens; class C + E, carpels; and class C+ D + E, ovules. 1. Gene D was non-functional: 2. Gene E was non-functional: 3. Only Gene A was functional: 4. Gene B and E were non-functional: 5. Only Gene A and Gene E were functional: Hint: If Gene A was non-functional the flower would have no sepals or petals, it would be composed of only stamens and carpels.arrow_forwardhelparrow_forward
- In most parts of the world, commercial potato crops are produced asexually by planting tubers. However, in some regions of the world, such as Southeast Asia and the Andes, some potatoes are grown from true seeds. Discuss the advantages and disadvantages of growing potatoes from true seed.arrow_forwardRefer to Figure 18. Are the storage roots of sweet potato ( Ipomoea batatas) and the tubers of potato ( Solanum tuberosum) analogous or homologous? Explain the answer brieflyarrow_forwardPlease answer question 16arrow_forward
- What is mutation? Explain the significance of mutation in plant breeding. Give an example of a disease resistant variety of cultivated plant induced by mutation.arrow_forwardCan you answer all the parts to this question please (a) What are the advantages of the self-incompatibility (SI) system in plants? Give at least three advantages. (b) What are the differences between gametophytic SI and sporophytic SI?arrow_forwardThe image below represents a flower meristem viewed from above. At the time the image represents, the cells are undifferentiated, although their eventual fates are determined (e.g. carpels, etc.). The rectangles indicate the regions of the meristem where particular genes (A, B, and C) are expressed. Note that these genes are expressed all around the circumference of the meristem at the location indicated; in other words, gene A is active in all cells in the rings labeled sepal and petals. Interpret the figure by filling in the following table: I've numbered each row to help with writing the answer below. Determined by the activity of which gene(s) - A,B,C? Organ Carpel 1. Stamen 2. Petal 3 Sepal 4 Sepals Petals Stamens Bn Carpelsarrow_forward
- The image below represents a flower meristem viewed from above. At the time the image represents, the cells are undifferentiated, although their eventual fates are determined (e.g. carpels, etc.). The rectangles indicate the regions of the meristem where particular genes (A, B, and C) are expressed. Note that these genes are expressed all around the circumference of the meristem at the location indicated; in other words, gene A is active in all cells in the rings labeled sepal and petals. Sepals Petals Stamens LEnCarpels 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.arrow_forwardThe image below represents a flower meristem viewed from above. At the time the image represents, the cells are undifferentiated, although their eventual fates are determined (e.g. carpels, etc.). The rectangles indicate the regions of the meristem where particular genes (A, B, and C) are expressed. Note that these genes are expressed all around the circumference of the meristem at the location indicated; in other words, gene A is active in all cells in the rings labeled sepal and petals. Sepals Petals Stamens UEn Carpels Explain what cue the floral cells are likely using to determine the cells that will differentiate into the different parts (ie. sepal, petal, etc.) based on the given scenerio.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: Genetic drift OMutation O Allopatric speciation OAdaptation Acclimation Freeze-induced cellular dehydrationarrow_forward
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