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 24, Problem 3IQ
- a. A new plant species 8 forms by autopolyploidy from species A, which has a chromosome number of 2n = 10. How many chromosomes would species 8 have?
- b. If species A were to hybridize with species C (2n = 14) and produce a new allopolyploid species D, how many chromosomes would species D have?
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Species I is diploid (2n=8) with chromosomes AABBCCDD. Related species II is diploid (2n=8) with chromosomes MMNNOOPP. Individuals with the ff. sets of chromosomes represent what types of chromosome mutations (be very specific)? Give the level of ploidy (in equation form) and resultant chromosome number for each plant.
AABBCCCCDD (c) MMNNOOOPPP (e) AABBCDD
AABBDD (d) AABBCCDDMNOP
Use two different colors to depict the unduplicated chromosomes of species C with larger chromosomes (2n = 8) and species D with slightly smaller chromosomes (2n =10), and of their F1 hybrid. Is the hybrid likely to befertile?
Species A has 2 n = 10 chromosomes. Species B has 2 n = 40 chromosomes. On average, will two randomly selected genes from species A be more likely, less likely, or equally likely to assort independently than two randomly selected genes from species B? Explain your reasoning.
Chapter 24 Solutions
Study Guide for Campbell Biology
Ch. 24 - Prob. 1IQCh. 24 - Fill in the following table to review three of the...Ch. 24 - a. A new plant species 8 forms by autopolyploidy...Ch. 24 - a. Differentiate between allopatric and sympatric...Ch. 24 - Use the following diagrams to explain the three...Ch. 24 - Prob. 6IQCh. 24 - Prob. 1SYKCh. 24 - Prob. 2SYKCh. 24 - What does the term punctuated equilibria describe?Ch. 24 - Prob. 1TYK
Ch. 24 - Prob. 2TYKCh. 24 - Prob. 3TYKCh. 24 - Which of the following is not a mechanism...Ch. 24 - Prob. 5TYKCh. 24 - Prob. 6TYKCh. 24 - Prob. 7TYKCh. 24 - Prezygotic barriers to reproduction between...Ch. 24 - A botanist identifies a new species of plant that...Ch. 24 - Which of the following would not contribute to...Ch. 24 - Morphological and genetic comparisons group 30...Ch. 24 - Prob. 12TYKCh. 24 - This chapter introduced several research studies...
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- You have four sequences from A-D representing four species: A: AAATTGATTAC B: TAATTGGTTAC C: AAATTGGTTGA D: AAATTGATTGA A is your outgroup. Take a piece of paper and illustrate the three possible trees that are different from each other. 1) Answer the question of why there are only three trees. Aren't there more trees possible? 2) Mark the changes in nucleotides that happen among the four species on the trees or write them down separately. Then calculate the shortest possible tree. This is the most parsimonious option. Which one is it? 3) Why does this tree not necessarily depict the true relationship among the four species? Illustrate and answer all questions on paper. Then take a picture of the paper with your cell phone. Make sure everything is in focus, i.e., go over the picture and take it again, if necessary. All your answers and the trees need to be clearly visible.arrow_forwardSpecies A has 2 n = 16 and species B has 2 n = 14. How many chromosomes would be found in an allotriploid of these two species? a. 21 or 24 b. 42 or 48 c. 22 or 23 d. 45arrow_forwardIf a certain species has more chromosomes than another species, does that mean it has (1) more DNA? Explain. (2) more genes? Explain.arrow_forward
- The New World cotton species Gossypium hirsutum has a 2n chromosome number of 52. The Old World species G. thurberi and G. herbaceum each have a 2n number of 26. When these species are crossed, the resulting hybrids show the following chromosome pairing arrangements at meiosis: Interpret these observations phylogenetically, using diagrams. Clearly indicate the relationships between the species. How would you prove that your interpretation is correct?(PICTURE ADDED)arrow_forwardThe primrose, Primula kewensis, has 36 chromosomes that are similar in appearance to the chromosomes in two related species, P. floribunda (2n = 18) and P. verticillata (2n = 18). How could P. kewensis arise from these species? How would you describe P. kewensis in genetic terms?arrow_forwardSpecies I is diploid (2 n = 8) with chromosomes AABBCCDD; related species II is diploid (2 n = 8) with chromosomes MMNNOOPP. What types of chromosome mutations do individuals with the following sets of chromosomes have? a. AAABBCCDD b. MMNNOOOOPP c. AABBCDD d. AAABBBCCCDDD e. AAABBCCDDD f. AABBDD g. AABBCCDDMMNNOOPP h. AABBCCDDMNOParrow_forward
- Most organisms with XX-XY sex determination have pseudoautosomal regions, portions of the X and Y chromosomes that are homologous. Would you predict that organisms with ZZ-ZW sex determination have pseudoautosomal regions of homology between Z and W chromosomes? Explain your answer.arrow_forwardFigure 4 shows the hybridization process between plant P and Q. a) Determine the sterile hybrid plant and the fertile hybrid plant. b) What is process A? c) State the chromosome number for the fertile hybrid plant.arrow_forwardB. Are any two the same species?arrow_forward
- Karl and Hally Sax crossed Aegilops cylindrica (2 n = 28), a wild grass found in the Mediterranean region, with Triticum vulgare (2 n = 42), a type of wheat . The resulting F1 plants from this cross had 35 chromosomes. Examination of metaphase I in the F1 plants revealed the presence of 7 pairs of chromosomes (bivalents) and 21 unpaired chromosomes (univalents). a. What does the appearance of the bivalents in the F1 hybrids suggest about the origin of Triticum vulgare wheat?arrow_forwardWhat is one statement that would support the theory that all organisms are related? A) The genetic code is almost universal.B) All flies have 2 wings.C) Eukaryotes have mitochondria.D) Prokaryotes have circular chromosomes.E) That the Theory of Pangenesis has held up to scrutiny for thousands of years What is the difference between cross and self-fertilization? A. In cross-fertilization the gametes from one plant are used to fertilize the gametes of another plantB. In cross-fertilization the gametes from one plant are used to fertilize the gametes from the same plant C. In self-fertilization the gametes from one plant are used to fertilize the gametes from another plantD. In cross-fertilization insects are used to pollinate the plants while in self-fertilization the investigator pollinates the plantsarrow_forwardSpecies I is diploid (2 n = 4) with chromosomes AABB; related species II is diploid (2 n = 6) with chromosomes MMNNOO. Give the chromosomes that would be found in individuals with the following chromosome mutations: a. Autotriploidy in species I.b. Allotetraploidy including species I and II.c. Monosomy in speciesI.d. Trisomy in species II for chromosome M.e. Tetrasomy in species I for chromosome A.f. Allotriploidy including species I and II.g. Nullisomy in species II for chromosome N.arrow_forward
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