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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Textbook Question
Chapter 38, Problem 6IQ
- a. What is an advantage of apomixis?
- b. What is “selfing,” and why might it be a desirable trait?
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Fruit weight is controlled by 4 gene pairs. The homozygous dominant weights 200 g while the homozygous recessive weighs 80 g. Assume that the alleles have equal contribution and have cumulative effects. The F1 and F2 of the two parents below were studied.
Parent 1 Parent 2
B1B1B2B2B3B3b4b4 x b1b1b2b2b3b3B4B4
Provide the genotype and phenotype of the F1.
c. Explain how this phenomenon relates to hybriddysgenesis, described in Problem 29 of Chapter 13.
Chapter 38 Solutions
Study Guide for Campbell Biology
Ch. 38 - Identify the flower parts in the following...Ch. 38 - a. Describe the male gametophyte. b. Describe the...Ch. 38 - Label the parts in the following diagrams of a...Ch. 38 - Prob. 4IQCh. 38 - a. List some ways in which fruits aid in seed...Ch. 38 - a. What is an advantage of apomixis? b. What is...Ch. 38 - How are vegetative reproduction and...Ch. 38 - Biofuels are considered carbon neutral, even...Ch. 38 - Draw a diagram of the major events in the life...Ch. 38 - List the advantages and disadvantages of sexual...
Ch. 38 - List some of the potential benefits and dangers of...Ch. 38 - ________ structure from which fruit typically...Ch. 38 - ________ generation that produces spores by...Ch. 38 - Prob. 3TYKFCh. 38 - Prob. 4TYKFCh. 38 - Prob. 5TYKFCh. 38 - Prob. 6TYKFCh. 38 - Prob. 7TYKFCh. 38 - Prob. 8TYKFCh. 38 - Prob. 9TYKFCh. 38 - Prob. 10TYKFCh. 38 - A flower on a dioecious plant is a. complete. b....Ch. 38 - Prob. 2TYKCh. 38 - Double fertilization involves fusion of sperm...Ch. 38 - The terminal cell of an early plant embryo a....Ch. 38 - Prob. 5TYKCh. 38 - Prob. 6TYKCh. 38 - Prob. 7TYKCh. 38 - Which of the following structures protects a bean...Ch. 38 - Prob. 9TYKCh. 38 - Prob. 10TYKCh. 38 - Prob. 11TYKCh. 38 - Which of the following statements is false? a....Ch. 38 - Prob. 13TYKCh. 38 - Prob. 14TYKCh. 38 - Prob. 15TYKCh. 38 - Prob. 16TYKCh. 38 - Which of the following techniques is being...
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- Y = yellow, y = green; R = round seed, r = wrinkled seed %3D An individual has the genotype YYRR and has offspring with an individual with the genotype yyrr. If the genes are both expressed with complete dominance, then what phenotype will all the offspring have? Yellow and Wrinkled Yellow and Round Green and Round Green and Wrinkledarrow_forwardFill in the blanksarrow_forwardWhat do homozygous and heterozygous mean? In the plants of Questions 13 and 14, which plants are which?arrow_forward
- Fruit weight is controlled by 4 gene pairs. The homozygous dominant weighs 200 g while the homozygous recessive weighs 80 g. Assume that the alleles have equal contribution and have cumulative effects. The F1 and F2 of the two parents below were studied. Parent 1 - D1D1D2D2D3D3d4d4 x Parent 2 - d1d1d2d2d3d3D4D4 Compute for the contribution of the dominant allele. Compute for the fruit weight of parental 1 and parental 2.arrow_forwardExplain the heterozygote advantage ?arrow_forwardDetermine what traits and in what proportion would the offspring be in the following cases (with and without assortment)arrow_forward
- In com, colored aleurone (in the kernels) is due to the dominant allele R. The recessive allele r, when homozygous, produces colorless aleurone. The plant color (not the kernel color) is controlled by another gene with two alleles Y and y. The dominant Y allele results in green color, whereas the homozygous presence of the recessive y allele causes the plant to appear yellow. In a testcross between a plant of unknown genotype and phenotype and a plant that is homozygous recessive for both traits, the following progeny were obtained. Numbers of Offspring Phenotype Colored Aleurone & Green Plant 88 Colored Aleurone & Yellow Plant 12 Colorless Aleurone & Green Plant 8 Colorless Aleurone & Yellow Plant 92 Question: Determine the genotype and phenotype of the unknown plant, including the precise association of the two genes on the homologs (i.e. the map arrangement)arrow_forwardPlease answer the question belowwwarrow_forwardFlower color variation in Phlox drummondii living either in sympatry or allopatry with Phlox cuspidata has previously been studied. Phlox drummondii exist in four colors: light blue, dark blue, light red, and dark red. Each flower color is controlled by a specific combination of alleles. In allopatry, butterflies randomly pollinate Phlox drummondii flowers of all color types. In contrast, non-random pollination occurs between differently colored flowers when both Phlox species are living in sympatry. The graph depicts the relative fitness of the alleles that drive flower color in Phlox drummondii under conditions of sympatry or allopatry with Phlox cuspidata. Label each half of the graph with the term sympatry or allopatry based on the observed trend in the relative fitness of the alleles that control all four flower colors in Phlox drummondii.arrow_forward
- please describe 2 similarities between linkage and independent assortmentarrow_forwardUsing the data on the segregation of eye-color from Dosophila culture (see table 1). Tabulate your F1 and F2 data on eye-color as associated with sex by making a table. Based on your observations, frame your hypothesis as to the expected segregation of eye-color associated with sex. Apply the Chi-squared test to determine the goodness of fit of your data per generation. Ho: Ha: Decision Criteria: If X2c < X2tab, accept Ho. Otherwise, fail to accept Ho and accept Ha. Fill-up the next table. Conclusion:arrow_forwardFruit weight is controlled by 4 gene pairs. The homozygous dominant weighs 200 g while the homozygous recessive weighs 80 g. Assume that the alleles have equal contribution and have cumulative effects. The F1 and F2 of the two parents below were studied. Parent 1 Parent 2B1B1B2B2B3B3b4b4 x b1b1b2b2b3b3B4B4 a. Compute for the frequencies of the different individuals in the F2. b. Provide the phenotypes of the F2 and their frequencies.arrow_forward
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