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Name: 3. How does meiosis contribute to genetic diversity? 4. Why is tetrad
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Description: 3. How does meiosis contribute to genetic diversity? 4. Why is tetrad formation important? 5. How are meiosis I and meiosis II different in terms of segregation?

Science

Biology

3. How does meiosis contribute to genetic diversity? 4. Why is tetrad formation important? 5. How are meiosis I and meiosis II different in terms of segregation?

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter11: Meiosis And Sexual Reproduction

Section: Chapter Questions

Problem 10RQ: Which statement best describes the genetic content of the two daughter cells in prophase II of...

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Prophase Metaphase Anaphase Telophase
1. How does meiosis I differ from mitosis? What about meiosis II from mitosis? difference between meiosis l and mitosis? difference between meiosis ll and mitosis? 2. What is the relationship between meiosis and fertilization? 3. If cell division during gametogenesis is non-meiotic, what is its consequence to the future generations of diploid organisms? 4. How does non-disjunction in meiosis lead to numerical chromosomal aberration?
Prophase Metaphase Anaphase Telophase
1. What is the difference between haploid and diploid?2. Differentiate body cells from sex cells.3. What are the subdivisions of meiosis?4. What are the major events in meiosis I?
1. Down Syndrome (trisomy 21) is caused by an error in meiosis which results in the presence of three chromosome #21s in the individual affected. In what two phases of meiosis could this error occur and, in general, HOW does it occur? 2. You are exploring a new planet when you discover a hexaploid (6n) organism. What is the ploidy of the gametes of wheat after meiosis and cytokinesis (what does 6n become)? 3. If a somatic cell has a diploid number of 4, what would be the result in the final daughter cells after cytokinesis IF in Anaphase, one of the chromosomes did not have a separation of sister chromatids? That is, if the sister chromatids of ONE of the chromosomes stayed together, what would be the chromosome number of each daughter cell? What problems might be caused by this happening?
1. What is meiosis?2. What specific cells in the body divide through this process?3. Meiosis involves two successive cell divisions. Which of the two is mitotic in nature? Why?4. What particular event in meiosis results to genetic variation? Why?5. Is there a possibility that a problem may occur at any stage of meiosis? If so, what is it and how does itaffect the organism?6. The cells produced after meiosis are haploid, how do these cells restore or maintain the normalchromosome number of the species?7. Why do you think mitosis and meiosis important in the life cycle of an organism?
1. If the two sister chromatids are the same, how are they called? 2. Which specific parts exchanged genetic information during cross over? 3. What is crossing over? 4. When will crossing over occurs? Why? 5. What will happen after crossing over? 6. How do meiosis contributes to genetic variation, while mitosis does not? 7. Why is crossing over important for evolution of species? V. Conclusion:
14. What is an example of a disease caused by an error in the process of mitosis? 15. What is an example of a disease caused by an error in the process of meiosis? 16. How long does the process of mitosis take? 17. How long does the process of meiosis take?
10. Compare the number and type of cells that result from meiosis vs. mitosis. 11. How do the genetic contents of cells resulting from mitosis and meiosis differ? 12. Comparing and Contrasting Describe a similarity and a difference between meiosis I and meiosis II. 13 Applying Concepts If a diploid cell containing 28 chromosomes undergoes meiosis, how many chromosomes will each daughter cell have? 14 Compare and Contrast: How are mitosis and meiosis similar and different?
In what ways is meiosis II similar to and different from mitosis of a diploid cell?
Which statement best describes the genetic content of the two daughter cells in prophase II of meiosis? haploid with one copy of each gene haploid with two copies of each gene diploid with two copies of each gene diploid with four copies of each gene
Figure 13.6 Which of the following statements about nondisjunction is true? Nondisjunction only results in gametes with n+1 or n-1 chromosomes. Nondisjunction occurring during meiosis II results in 50 percent normal gametes. Nondisjunction during meiosis I results in 50 percent normal gametes. Nondisjunction always results in four different kinds of gametes.