pores are haploid and thus begin the life cycle again. Sordaria fimicola is often used to observe crossing wild type strain has black ascospores and the mutant type has tan ascospores. When a combination of o through meiosis, the location of the ascospores will directly show if crossing over has occurred. The hows a fruiting body with ascoscpores developing within an ascus. d) Meiosis Mitosis Filaments ation of non-crossover asci Meiosis II Mitosis *Ascospores (haploid) ver has not occurred (parental type), asci will be arranged as follows, with 4+4 black and tan: I U U U U Black spore (haploid) www.w30 of WWWXXX0

pores are haploid and thus begin the life cycle again. Sordaria fimicola is often used to observe crossing wild type strain has black ascospores and the mutant type has tan ascospores. When a combination of o through meiosis, the location of the ascospores will directly show if crossing over has occurred. The hows a fruiting body with ascoscpores developing within an ascus. d) Meiosis Mitosis Filaments ation of non-crossover asci Meiosis II Mitosis *Ascospores (haploid) ver has not occurred (parental type), asci will be arranged as follows, with 4+4 black and tan: I U U U U Black spore (haploid) www.w30 of WWWXXX0

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter24: Fungi

Section: Chapter Questions

Problem 1VCQ: Figure 24.14 Which of the following statements is true? A dikaryotic ascus that forms in the...

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z e 50 μm Figure 3. Grasshopper testis with differential staining and viewed under a microscope. Encircle the cell and label the specific stage in the meiosis it displays. Identify as many as you can witha minimum of two cells representing different stages. Make sure to specify whether the stage belongs to meiosis I or II. If you identify a cell at prophase I, then specify the substage.
Q.No.1. A pollen of maize with nuclei labeled P, Q and R fertilized an embryo sac with nuclei labeled S, T, U, V, W, X, Y and Z as shown here. X V Y Synergids W P Tube nucleus Antipodals Which of the nuclei in the pollen grain would contain genetically identical sets of chromosomes? Which of the nuclei in the embryo sac would be chromosomally and genetically equivalent? Which of the nuclei in these two gametophytes will have no descendents in the mature seed?
Please answer all the question 1.Unlike some other haploid fungi, S. fimicola is homothallic. It produces perithecia from intrastrain mating, which have identical parents. How do you think this effect will show up in your data? more crossing over asci of uniform color asci with equally divided colors only black asci 2.S. fimicola is a haploid species with both the mature cells and the spores having only single chromosomes (seven total). Diploid cells only exist temporarily during reproduction. What proportions of offspring do you expect from black and tan parents? a. 100% black b. 75% black and 25% tan c. 50% black and 50% tan d. 100% tan 3.Gray and tan color in S. fimicola are caused by mutations of different genes. If neither is mutated, black spores result. What color do you think will result if both are mutated? tan B. gray C. black D. no color 4.During reproduction, one…
Figure 9.3 Schematic representation of sexual reproduction (hyphal fusion) in Sordaria fimicola. ㅏ (a) Tan X Tan (b) -Haploid- Black X Black (c) Tan X Black (with no crassing-over) Fusion -Diploid- Majosis I 想想 * X* X * Y * X * Meiasis I X X X X X X -Haploid- Mitosis Position in ascus Bad D II CHIXO Nonrecombinant type
Label A-H from image as the following: I: Dikaryotic II: Basidiospores III: Plasmogamy IV: Meiosis V: Diploid VI: Haploid VII: Karyogamy VIII: Zygote
Alternation of generations describes which of the following? The haploid form can be multicellular; the diploid form is unicellular The haploid form is unicellular; the diploid form can be multicellular Both the haploid and diploid forms can be multicellular Neither the haploid nor the diploid forms can be multicellular.
Figure 23.25 Which of the following statements about Paramecium sexual reproduction is false? The macronuclei are derived from micronuclei. Both mitosis and meiosis occur during sexual reproduction. The conjugate pair swaps macronuclei. Each parent produces four daughter cells
Figure 24.14 Which of the following statements is true? A dikaryotic ascus that forms in the ascocarp undergoes karyogamy, meiosis, and mitosis to form eight ascospores. A diploid ascus that forms in the ascocarp undergoes karyogamy, meiosiis, and mitosis to form eight ascospores. A haploid zygote that forms in the ascocarp undergoes karyogamy, meiosiis, and mitosis to form eight ascospores. A dikaryotic ascus that forms in the ascocarp undergoes plasmogamy, meiosis, and mitosis to form eight ascospores.
Figure 11.9 If a mutation occurs so that a fungus is no longer able to produce a minus mating type, will it still be able to reproduce?
During sexual reproduction, a homothallic mycelium contains all septated hyphae all haploid nuclei both mating types none of the above
What is the ploidy of the most conspicuous form of most fungi? diploid haploid alternation of generations asexual
Fill in the blank. The microspore is O Haploid O Diploid