Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 12, Problem 13SQ
Match each term with the best description.
| __ interphase | a. different forms of a gene |
| __ metaphase I | b. useful for varied offspring |
| __ alleles | c. none between meiosis I and meiosis II |
| __ zygotes | d. chromosome lineup |
| __ gametes | e. haploid |
| __ males | f. form at fertilization |
| __ prophase I | g. mash-up time |
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When does DNA replication take place regarding meiosis? DNA replication___ (select one)
A. Occurs between meiosis I and meiosis II
B. occurs during Prophase I
C. occurs before meiosis I begins
D. does not take place in cells best into undergo meiosis
Match the specific phase of meiosis with the correct description._____ Prophase I a. Homologous chromosomes arrive atopposite poles._____ Metaphase I b. Homologous chromosomes line up._____ Anaphase I c. Chromosomes line up at the equator._____ Telophase I d. Independent assortment occurs._____ Prophase II e. Separated sister chromatids arrive atopposite poles._____ Metaphase II f. Sister chromatids remain condensed._____ Anaphase II g. Crossing over occurs._____ Telophase II h. Sister chromatids pull apart.
Match the chromosome terms appropriately. ___ polyploid a. symptoms of a genetic ___ deletion disorder ___ aneuploidy b. chromosomal mashup ___ translocation c. extra sets of chromosomes ___ syndrome d. gets around ___ transposable e. chromosome loses a chunk element of DNA f. one extra chromosome
Chapter 12 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 12 - One evolutionary advantage of sexual over asexual...Ch. 12 - Meiosis is a necessary part of sexual reproduction...Ch. 12 - Meiosis _________. a. occurs in all eukaryotes b....Ch. 12 - Sexual reproduction in animals requires ______. a....Ch. 12 - Meiosis ______ the parental chromosome number. a....Ch. 12 - Dogs have a diploid chromosome number or 78. How...Ch. 12 - The cell in the diagram to the right is in...Ch. 12 - Prob. 8SQCh. 12 - Prob. 1DAACh. 12 - Prob. 2DAA
Ch. 12 - Prob. 3DAACh. 12 - Prob. 9SQCh. 12 - Crossing over mixes up ______. a. chromosomes b....Ch. 12 - Crossing over happens during which phase of...Ch. 12 - Which of the following is one of the very...Ch. 12 - Match each term with the best description. __...Ch. 12 - ________ contributes to variation in traits among...Ch. 12 - The diploid chromosome number for the body cells...Ch. 12 - In your own words, explain why sexual reproduction...Ch. 12 - Different populations of the tiny freshwater...Ch. 12 - Make a simple sketch of meiosis in a cell with a...
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- BPA and Abnormal Meiosis In 1998, researchers at Case Western University were studying meiosis in mouse oocytes (germ cells) when they saw an unexpected and dramatic increase of abnormal events (FIGURE 12.6). Improper segregation of chromosomes during meiosis is one of the main causes or human genetic disorders. The spike in abnormal meiosis began right after the mouse facility started washing the animals' plastic cages and water bottles in a new, alkaline detergent. The detergent had damaged the plastic, which as a result was leaching bisphenol A (BPA). BPA is a synthetic chemical that mimics estrogen, the main female sex hormone in animals. Though it has since been banned for use in baby bottles, BPA is still widely used to manufacture other plastic items and epoxies (such as the coating on the inside of metal cans of food). BPA-free plastics are often manufactured with a related compound, bisphenol S (BPS), that has effects similar to BPA. FIGURE 12.6 Abnormalities in meiosis that occurred after exposure to BPA. Top, the most abnormal meiosis events occurred in mice that were housed in damaged plastic caging with damaged plastic bottles. Damaged plastic releases BPA. Bottom, fluorescent micrographs show the chromosomes (red) and spindle (green) in nuclei of mouse germ cells in metaphase I. A Normal metaphase; BD abnormal metaphase. What percentage of mouse oocytes displayed abnormalities of meiosis with no exposure to damaged caging?arrow_forwardMitosis reduces the chromosome number fro diploid to haploid for the production of gametes. True False 2. During prophase I of meiosis, homologous pairs line up in a process called ______. cytokinesis anaphase synapsis non disjunction 3. During meiosis, sister chromatids separate during Anaphase I Anaphase II telophase I metaphase I 4. Gametes produced during meiosis are genetically identical. True False 5. Failure of either homologous pairs or sister chromatids to separate during meioisis is called _____. crossover translocation dislocation non disjunctionarrow_forwardThe dividing cells shown in the picture would be in _?_ of _?_. Assume that the starting cell was diploid and it was 2n=4. A. Metaphase, mitosis B. Metaphase, meiosis I C. Metaphase, meiosis II D. Anaphase, meiosis I E. Anaphase, mitosisarrow_forward
- Meiosis is a necessary part of sexual reproduction because it_____ . a. divides two nuclei into four new nuclei b. reduces the chromosome number for gametes c. gives rise to new allelesarrow_forwardThe part of meiosis that is similar to mitosis is ________. a. meiosis I b. anaphase I c. meiosis II d. interkinesisarrow_forwardMatch each cell to proper phase of meiosis. G A. TelophaseII B B. Anaphase I C. Telophase I D. Prophase II E. Anaphase II F. Metaphase II G. Metaphase I H. Prophase Iarrow_forward
- Homologaus Chromasomes A= В. B = XX C = с. D = Centromere A. Sister Chromatids D. 7. Label the following terms/descriptions as either "Sister Chromatids", "Homologous Chromosomes," or "Both." (1 point each; 9 points total) a. Have identical DNA sequences b. Separate during meiosis c. Separate during mitosis d. Separate during meiosis I e. Separate during meiosis II f. One comes from the mother and the other from the father g. Are held together by cohesion h. Can undergo crossing over i. Are separated by the spindlearrow_forwardSt. Paul University Manila 18 Laboratory Manual in Anatomy and Physiology for Nursing and Psychology Students e. Anaphase d. Anaphase II 9. Sister chromatids of each duplicated chromosome end up at opposite spindle poles during a. Prophase I b. Prophase II c. Anaphase I d. Anaphase I Match each term with its description. D chromosome number A alleles T metaphase I Binterphase a. Different molecular forms of the same gene b. None between meiosis I, II c. All the chromosomes aligned at spindle equator d. All 1osomes of a given type Review Questions: 1. Why can we expect meiosis to give rise to genctic differences between parent cells and their daughter cells in fewer generations than mitosis? 2. Two examples of chemotherapcutic drugs (drugs used to treat cancer) and their cellular actions are listed below. Explain why cach drug could be fatal to a cell. Vincristine: damages the mitotic spindle a. b. Adriamycin: binds to DNA and blocks mRNA synthesis GCash S496 270arrow_forwardThe part of meiosis that is similar to mitosis is________.a. meiosis Ib. anaphase Ic. meiosis IId. interkinesisarrow_forward
- Choose the best matching phrase in the right columnfor each of the terms in the left column.a. meiosis 1. X and Yb. gametes 2. chromosomes that do not differbetween the sexesc. karyotype 3. one of the two identical halvesof a replicated chromosomed. mitosis 4. microtubule organizing centersat the spindle polese. interphase 5. cells in the testes that undergomeiosisf. syncytium 6. division of the cytoplasmg. synapsis 7. haploid germ cells that uniteat fertilizationh. sex chromosomes 8. an animal cell containing morethan one nucleusi. cytokinesis 9. pairing of homologouschromosomesj. anaphase 10. one diploid cell gives rise to twodiploid cellsk. chromatid 11. the array of chromosomes in agiven celll. autosomes 12. the part of the cell cycle duringwhich the chromosomes are notvisiblem. centromere 13. one diploid cell gives rise to fourhaploid cellsn. centrosomes 14. cell produced by meiosis thatdoes not become a gameteo. polar body 15. the time during mitosis whensister chromatids…arrow_forwardGametes Meiosis Fertilization Zygote (2n 2n Diploid multicellular organism Mitosis (a) Animals What process allows an organism to go from a zygote to a multicellular organism. 26 etv S MacBook Air DII DD 80 F5 F7 F8 F9 F10 F2 F3 #3 $ & 4 9. 7 8 E Y U D F H J K M. Rarrow_forwardGametogenesis is d. The process of gamete formation which goes through one division of meiosis Oc. The process of gamete formation which goes through one division of mitosis b. The process of gamete formation where the number of chromosomes is halved for 23 chromosomes a. The process of gamete formation where the number of chromosomes is doubled for 46 chromosomes None of the choices are correct Question 3 or False: Meiosis undergoes two sets of divisions.arrow_forward
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