HUMAN BIOLOGY
16th Edition
ISBN: 9781260233032
Author: Mader
Publisher: RENT MCG
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Textbook Question
Chapter 19.4, Problem 2CYP
Explain how meiosis reduces the likelihood that gametes will have the same combination of chromosomes and genes.
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Distinguish between the following terms: somatic cell and gamete; autosome and sex chromosomes; haploid and diploid.
Describe the events that characterize each phase of meiosis.
Describe three events that occur during meiosis I but not mitosis.
Name and explain the three events that contribute to genetic variation in sexually reproducing organisms.
List and describe two specific differences between meiosis I and meiosis II.
Please explain the outcomes of nondisjunction in meiosis one versus nondisjunction in meiosis two, in terms of the effect on the gametes. Please give an example of a defect that results from nondisjunction in meiosis.
Chapter 19 Solutions
HUMAN BIOLOGY
Ch. 19.1 - Distinguish between a chromosome and chromatin.Ch. 19.1 - Prob. 2LOCh. 19.1 - Prob. 3LOCh. 19.1 - Prob. 1CYPCh. 19.1 - Prob. 2CYPCh. 19.1 - Prob. 3CYPCh. 19.2 - Prob. 1LOCh. 19.2 - Prob. 2LOCh. 19.2 - Prob. 3LOCh. 19.2 - Describe the cell cycle, and list the locations of...
Ch. 19.2 - Prob. 2CYPCh. 19.2 - Prob. 3CYPCh. 19.2 - Summarize why external controls may be necessary...Ch. 19.3 - Prob. 1LOCh. 19.3 - Prob. 2LOCh. 19.3 - Prob. 3LOCh. 19.3 - Prob. 1CYPCh. 19.3 - Prob. 2CYPCh. 19.3 - Prob. 3CYPCh. 19.4 - Prob. 1LOCh. 19.4 - Prob. 2LOCh. 19.4 - Prob. 3LOCh. 19.4 - Prob. 1CYPCh. 19.4 - Explain how meiosis reduces the likelihood that...Ch. 19.4 - Prob. 3CYPCh. 19.4 - Compare and contrast the stages of oogenesis and...Ch. 19.5 - Prob. 1LOCh. 19.5 - Prob. 2LOCh. 19.5 - List the similarities and differences between...Ch. 19.5 - Prob. 2CYPCh. 19.5 - Prob. 3CYPCh. 19.6 - Prob. 1LOCh. 19.6 - Describe the causes and consequences of trisomy...Ch. 19.6 - Prob. 3LOCh. 19.6 - 4. Describe the effects of deletions,...Ch. 19.6 - Prob. 1BTSCh. 19.6 - Prob. 2BTSCh. 19.6 - Prob. 1CYPCh. 19.6 - Prob. 2CYPCh. 19.6 - Prob. 3CYPCh. 19.6 - Prob. 4CYPCh. 19 - Prob. 1ACh. 19 - 2. Which of the following is/are produced by the...Ch. 19 - 3. Label the drawing of the cell cycle: then list...Ch. 19 - 4. At which of the following checkpoints is the...Ch. 19 - ...Ch. 19 - ...Ch. 19 - a. metaphase
b....Ch. 19 - ...Ch. 19 - metaphase
prornetaphase
telophase
prophase c....Ch. 19 - 10. If a parent cell has a diploid number of 18...Ch. 19 - 11. If a parent cell has 22 chromosomes. the...Ch. 19 - 12. Crossing-over occurs between
sister chromatids...Ch. 19 - 13. Which of these helps provide genetic...Ch. 19 - 14. Polar bodies are produced during
DNA...Ch. 19 - 15. The pairing of homologous chromosomes occurs...Ch. 19 - 16. Sister chromatids separate during anaphase of...Ch. 19 - 17. Monosomy or trisomy occurs because...Ch. 19 - 18. A person with Klinefelter syndrome is and...Ch. 19 - Prob. 1TCCh. 19 - Prob. 2TCCh. 19 - Prob. 3TCCh. 19 - Prob. 4TC
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- The part of meiosis that is similar to mitosis is_______. a. meiosis I b. anaphase I c. meiosis II d. interkinesisarrow_forwardDescribe each stage of Meiosis: MEIOSIS I PROPHASE 1- METAPHASE 1- ANAPHASE 1- TELOPHASE 1- MEIOSIS II PROPHASE II- METAPHASE II- ANAPHASE II- TELOPHASE II-arrow_forwardExplain the significance of events occurring in each phase of meiosis.arrow_forward
- Describe how meiosis provides for genetic variability.If an animal had a haploid number of two (no sex chromosomes), how many genetically different gametes could it produce? (Assume no crossing over.) What if it had a haploid number of five?arrow_forwardCompare and contrast phases of meiosis I with phases of meiosis II in terms of the events taking place and the behaviour of chromosomes.arrow_forwardDescribe the process of meiosisarrow_forward
- How would the mutation of a single chromosome in metaphase 1 of meiosis affect the process of meiosis? Use a simple cell with two chromosomes, what is the ratio of gametes with the mutation vs without the mutation?arrow_forwardIf nondisjunction occurs during meiosis I, how many of the daughter cells will have an incorrect number of chromosomes after meiosis I and meiosis II are complete? 4 2 1 3arrow_forwardDiagram how nondisjunction in meiosis I or II can resultin extra or missing chromosomes in reproductive cells(gametes)arrow_forward
- List 3 important events that occur during meiosis and provide a justification why each should happen at a specific stage.arrow_forwardGive a detailed description of all the phases of meiosisarrow_forwardDescribe the different events in meiosis that result ingenetic variation among gametes.arrow_forward
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