Campbell Biology (Custom) (Looseleaf)
10th Edition
ISBN: 9781269755887
Author: Reece
Publisher: PEARSON
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Textbook Question
Chapter 13.3, Problem 2CC
WHAT IF? → After the synaptonemal complex disappears, how would any pair of homologous chromosomes be associated if crossing over did not occur? What effect might this have on gamete formation?
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Chapter 13 Solutions
Campbell Biology (Custom) (Looseleaf)
Ch. 13.1 - MAKE CONNECTIONS Using what you know of gene...Ch. 13.1 - How does an asexually reproducing eukaryotic...Ch. 13.1 - WHATIF? A horticulturalist breeds orchids, trying...Ch. 13.2 - MAKE CONNECTIONS In Figure 13.4. how many DNA...Ch. 13.2 - VISUAL SKILLS In The karyotype shown in Figuro...Ch. 13.2 - WHAT IF? A certain eukaryote lives as a...Ch. 13.3 - MAKE CONNECTIONS Comparc tho chromosomes in a...Ch. 13.3 - WHAT IF? After the synaptonemal complex...Ch. 13.4 - What is the original source of Variation among the...Ch. 13.4 - The diploid number for fruit flies is 8, and the...
Ch. 13.4 - Prob. 3CCCh. 13 - Explain why human offifuing resemble their parents...Ch. 13 - Compare the life cycles of animals and plants,...Ch. 13 - Prob. 13.3CRCh. 13 - Prob. 13.4CRCh. 13 - A human cell containing 22 autosomes.and a Y...Ch. 13 - The two homologs of a pair move toward opposite...Ch. 13 - Meiosis II is similar to mitosis in that (A)...Ch. 13 - Prob. 4TYUCh. 13 - If we continue to follow the cell lineage from...Ch. 13 - DRAW IT The diagram shows a cell in meiosis. (a)...Ch. 13 - Explain how you can tell that the cell in question...Ch. 13 - EVOLUTION CONNECTION Many species can reproduce...Ch. 13 - SCIENTIFIC INQUIRY The diagram in quest ion 6...Ch. 13 - Prob. 10TYUCh. 13 - SYNTHESIZE YOUR KNOWLEDGE For selected answers,...
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- VISUALIZE Sketch a series of diagrams showing each of the following, making sure to end each series with haploid cells: (a)How a pair of alleles for a single locus segregate in meiosis (b)How the alleles of two unlinked loci assort independently in meiosis (c)How the alleles of two linked loci undergo genetic recombinationarrow_forwardMAKE CONNECTIONS Look at Figure 12.7 and imagine the twodaughter cells undergoing another round of mitosis, yielding four cells.Compare the number of chromosomes in each of those four cells, aftermitosis, with the number in each cell in Figure 13.8, after meiosis. Whatis it about the process of meiosis that accounts for this difference, eventhough meiosis also includes two cell divisions?arrow_forward1. What happens during crossing over? Why is “recombination” an alternative term for what happens during the process of crossing over? Does it occur during mitosis? If so, when? If not, explain why not. Does crossing over occur during meiosis? If so, when? If not, explain why not. How does crossing over influence the genetic diversity of gametes?arrow_forward
- Question - Predict the types of gametes that are formed if non-disjunction of the X chromosomeoccurs in the 1st division. Click on all the different possible gamete types of sperm that could be formed (in terms of the X and Y chromosome, assume that the gamete is normal, having one of all the other chromosome types). X (normal) Y (normal) no X or Y (abnormal) XY (abnormal) YY (abnormal) XX (abnormal)arrow_forwardStill studying meiosis. How many chromosomes does a haploid cell have? In prophase II how many chromosomes does each daughter cell have?arrow_forwardDiscuss Concepts One of the human chromosome pairs carries a gene that influences eye color. In an individual human, one chromosome of this pair has an allele of this gene that contributes to the formation of blue eyes. The other chromosome of the pair has an allele that contributes to brown eye color (other genes also influence eye color in humans). After meiosis in the cells of this individual, what fraction of the nuclei will carry the allele that contributes to blue eyes? To brown eyes?arrow_forward
- Discuss Concepts Can a linkage map be made for a haploid organism that reproduces sexually?arrow_forward- Determine how many unique gametes can be produced by a cell that has four pairs of homologous chromosomes. - A human female can release about 350 eggs during her reproductive years. What is the chance that she would generate the same gamete twice in her lifetime?arrow_forwardA woman with normal chromosomes mates with a man who also has normal chromosomes. Q.What chromosome combinations and numbers of Barr bodies would you expect to see if the chromosomes separate normally in oogenesis, but nondisjunction of the sex chromosomes takes place in meiosis I of spermatogenesis?arrow_forward
- MAKE CONNECTIONS The ABO blood type locus hasbeen mapped on chromosome 9. A father who has typeAB blood and a mother who has type O blood have achild with trisomy 9 and type A blood. Using this information, can you tell in which parent the nondisjunctionoccurred? Explain your answer. (See Figures 14.11and 15.13.)arrow_forward6. Consider your btoehr and your son. a. If you are female, will your brother and your son have essentially identically Y chromosomes? Explain your answer. b. If you are male, will your brother and your son have essentially identical Y chromosomes? Explan your answer.arrow_forward__1. If a mother cell has 70 chromosomes, what will be the number of each daughter cell’s chromosome if the mother cell undergoes mitosis? __1. How many sperms will be formed from 64 spermatids?arrow_forward
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