Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 25, Problem 25.3PS
Telling Them Apart. Briefly describe how you might distinguish between each of the following pairs of phases in the same organism:
(a) Metaphase of mitosis and metaphase I of meiosis
(b) Metaphase of mitosis and metaphase II of meiosis
(c) Metaphase I and metaphase II of meiosis
(d) Telophase of mitosis and telophase II of meiosis
(e) Pachytene and diplotene stages of meiotic prophase I
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- Explain why it is important that meiosis converts diploid cells to haploid. Then briefly explain how meiosis does that, makes a diploid cell haploid.
True or False.
1. a.) A diploid organism with 2N=8 would have 4 chromosomes in each gamete.
b.) Homologous chromosomes do not pair up during asexual cell division.
c.) Gametes have the same number of chromosomes as a somatic cell.
d.) Cell division would not be possible without the work of DNA Polymerase.
Pick one of the FALSE statements from the 4 previous questions and explain why it is incorrect.
Still studying meiosis. How many chromosomes does a haploid cell have? In prophase II how many chromosomes does each daughter cell have?
Chapter 25 Solutions
Becker's World of the Cell (9th Edition)
Ch. 25 - Cloning can be done by somatic cell nuclear...Ch. 25 - If the DNA content of a diploid cell in the G1...Ch. 25 - Prob. 25.3CCCh. 25 - Prob. 1QCh. 25 - Prob. 25.4CCCh. 25 - What do you think would happen to a pathogenic...Ch. 25 - Prob. 25.6CCCh. 25 - The Truth About Sex. For each of the following...Ch. 25 - Ordering the Phases of Meiosis. Drawings of...Ch. 25 - Telling Them Apart. Briefly describe how you might...
Ch. 25 - Prob. 25.4PSCh. 25 - More about DNA. Let X be the amount of DNA present...Ch. 25 - Meiotic Mistakes. Infants born with Patau syndrome...Ch. 25 - Prob. 25.7PSCh. 25 - QUANTITATIVE Punnett Squares as Genetic Tools. The...Ch. 25 - QUANTITATIVE Genetic Mapping. The following table...Ch. 25 - Prob. 25.10PSCh. 25 - Prob. 25.11PS
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- Using meiosis. Explain why Drosophila progeny remain diploid 2n=8?arrow_forwardMeiosis- a. Are the chromosomes at each pole during telophase 1 identical to chromosomes in the original cell (prior to S phase of cell cycle)? b. How about telophase 2?arrow_forwardsequence. Name each stage of mitosis, A to E. Each answer choice only once. used once and Picture A Metaphase [Choose ] Metaphase Anaphase Prometaphase Telophase Prophase Telophase Picture B Picture C Picture D Anaphase Picture El Promctaphasearrow_forward
- Let’s model mitosis. Focus on drawing the cell nucleus taking care to model the number and location of chromosomes. Although the chromosomes are only visible in each stage, draw them in all stages for clarity sake. Draw a 2n=4 cell at G1 of interphase. Draw the same cell at the start of prophase. Draw the same cell at metaphase. Draw the cell(s) that result at the end of cytokinesis. You can draw this out on paperarrow_forwardNeed help with three question. Multiple choise. 1.) How is the outcome of meiosis different from the outcome of mitosis? a.) The daughter cells produced in mitosis are genetically different from the parent cells, but have the same number of chromosomes, while these are genetically similar in case of meiosis and have fewer chromosomes. b.) The daughter cells produced in mitosis are genetically similar to the parent cells and have the same number of chromosomes, while these are genetically different in meiosis and have half the number of chromosomes. c.) The daughter cells produced in both cases are genetically similar to the parent cells, but in meiosis, there are fewer chromosomes. d.) The daughter cells produced in both cases are genetically different, but in mitosis, there are fewwer chromosomes in daughter cells. 2.) What would be the effect on the number of chromosomes in gametes due to non-disjunction? a.) The chromosome number of the gametes remains the same as the parent…arrow_forwardble during metaphase. You would know a dividing cell was a plant cell rather an animal cell if you saw that it had formed a cell plate. Meiosis I produces two haploid cells. 9. 10. III. LABELING: Label the parts of the cells. 1. 2. 8. 3. 4. 6. 7. 5. IV. ESSAY (7 points) 11. (diff. cie focilitated transport active transportarrow_forward
- Meiosis: Sequence of Stages Number the stages of meiosis from 1 to 8 to show their correct chronological sequence. [Choose] [Choose] Prophase I Prophase II Metaphase I libraries Anaphase I Telophase I Telophase II Anaphase II Metaphase II nstructional urvey 3. 4 [Choose ] [Choose ) 6 [Choose] 7. [Choose ] 8. [Choose] > >arrow_forwardPlease help a. How many chromosomes and/or sister chromatids do Figure A and B show? b. What is the name of the process that took place to get from structure A to structure B?arrow_forwardLet’s model mitosis. Focus on drawing the cell nucleus taking care to model the number and location of chromosomes. Although the chromosomes are only visible in each stage, draw them in all stages for clarity sake. Draw a 2n=4 cell at G1 of interphase. Draw the same cell at the start of prophase. Draw the same cell at metaphase. Draw the cell(s) that result at the end of cytokinesis.arrow_forward
- Fill in the blanks. The parentheses represent choices for each blank. In both mitosis and ________ (meiosis I, meiosis II) , a spindle forms and separates sister chromatids. While mitosis produces two nuclei, meiosis II produces _________ (four haploid nuclei, two haploid nuclei).arrow_forwardComic San.. BIUA ===|三 Normal text 12 II1 3 CP Unit 6 Review: Meiosis Page 1. What type of cell undergoes meiosis? Gamete cells Somațic cells or 2. What are homologous chromosomes? 3. For each of the following state if the cell is haploid or diploid. Sperm cell = Liver cell = Egg cell = Stomach cell = 4. If the diploid number in a liver cell is 52, how many chromosomes are there in the egg of this organism? 5. During meiosis, the chromosome number: a) is doubled becomes diploid b) is reduced c) remains the same d) 6. Cells starting mitosis & meiosis begin with a (haploid or diploid) set of chromosomes. 7. How many times do cells divide during meiosis? 8. What are the stages of meiosis called? Meiosis I: II lılıarrow_forwardCell Cycle. Mitosis. and Meiosis: 19) Draw a cell with 4 pairs of homologous chromosomes (aka a diploid number of 8 (2n=8)) in anaphase of mitosis. In the diagram, label the homologous chromosomes, sister chromatids, centromeres, and mitotic spindle.arrow_forward
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