Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 13, Problem 11TYU
SYNTHESIZE YOUR KNOWLEDGE
For selected answers, see Appendix A.
The Cavendish banana, the world's most popular fruit, is currently threatened by extinction due to a
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Meiosis
In this worksheet, you will review the steps of meiosis and view video simulations of this type of
cell division. You will also view an onion root tip and calculate the percentage of cells at each of
the stages of cell division.
Stages of Meiosis
Visit http://www.biology.arizona.edu/cell_bio/tutorials/meiosis/main.html for an additional
review of Meiosis
Part 1: Reproduction
1. Give an example of asexual reproduction.
2. What is a clone?
3. What is the difference between haploid and diploid?
Part 2: Chromosomes in a Diploid Cell
4. What is the diploid chromosome number for humans?
5. Egg and sperm cells are [haploid / diploid]
Part 3: Meiosis 1 and Meiosis 2
6. Name the stage of meiosis 1 where each of the following occurs:
● Homologous chromosomes pair and form synapses.
. Bivalents align at metaphase plate
●
Two complete daughter cells form
Nuclear membrane disappears.
Nuclear membrane reforms.
Chromosomes move to separate pole
●
●
Please answer fast
Sexual reproduction is a way to create genetic variation in the offspring.a. Describe in which circumstances this is desired.b. Describe the three different processes in a sexual life cycle that create genetic variation.For each process, describe in detail during which part or phase the sexual life cycle ittakes place.c. Consider this diploid animal cell in G1 phase. What is the haploid and the diploid number of this cell?
Humans cells normally have 46 chromosomes (2n). Specify the number of chromosomes present at each of the following stages. In your answers, determine diploid or haploid number of chromosomes and the count the chromatids as chromosomes.
For example: anaphase I of meiosis: 46 (2n) = 92
a. metaphase I of meiosis
b. metaphase of mitosis
c. telophase I of meiosis
d. telophase II of meiosis
Chapter 13 Solutions
Campbell Biology: Custom Edition
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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- Which of the following statements are correct? Explain your answers. A. The egg and sperm cells of animals contain haploid genomes. B. During meiosis, chromosomes are allocated so that each germ cell obtains one and only one copy of each of the different chromosomes. C. Mutations that arise during meiosis are not transmitted to the next generation.arrow_forwardFill in the cells below showing the NORMAL process of meiosis of the male's sex chromosomes (XY – the X and Y are representing the entire chromosome, and remember X and Y act like a homologous pair). DO NOT show crossing over. prior to meiosis 44 +XY What are the possible normal gametes produce after meiosis division? Identify the possible sex of the offspring if these normal sperm cells are fertilized by the egg cell.arrow_forwardGive typing answer with explanation and conclusionarrow_forward
- use the image to answer these two questions - draw all possible metaphase I arrangements that would occur if this cell were undergoing meiosis. be sure to label the alleles as shown above -draw all possible gametes that will result from this cell undergoing meiosis. again, be sure to label the alleles (there should be EIGHT total possbilities, please draw ALL of them)arrow_forwardPlease explain (and simply) the process of mitosis and meiosis. What are the differences between them?arrow_forwardanswer all pleasearrow_forward
- The drawings below represent four possible cells produce by meiosis in a cell pf the genotype AaBb. Examine the figures below and answer the questions that follow: 1. How many different types of cells are produced at the end of Meiosis I? A *Write your answer as a word, not a number 2. Is there any other way you could have arranged the chromosomes? For example, a. Could A and a be arranged so that both go to the same cell after Metaphase I (Yes/No)? B b. Could B and b be arranged so that both go to the same cell after Metaphase I (Yes.No)? C c. Could A and B be arranged so that both go to the same cell after Metaphase I (Yes/No)? D d. Could A and b be arranged so that both go to the same cell after Metaphase I?(Yes./No) E 3. Are the daughter cells haploid, or diploid? F 4. Do the daughter cells have the same genetic composition as the original cell (Yes/No)? G 5. Focus on the four daughter cells…arrow_forwardOogenesis is the process of female gamete (ovum or egg) production in animals. Spermatogenesis is the process of male gamete (sperm) production in animals. Although both processes produce gamete(s), there are distinct similarities and differences between the two. Compare and contrast oogenesis to spermatogenesis by drawing a diagram showing the two processes. In your hand-drawn diagrams, be sure to include when the processes of mitosis, meiosis I and meiosis II are occurring identify each germ cell structure and its ploidy highlight 4 differences between the two processesarrow_forwardDrag the X and Y chromosomes to the drawings below, lining them up properly for metaphase I and metaphase II of meiosis for a male. A pair of autosomes is already included in the drawings, and a diploid cell is shown at the left for reference. Diploid cell Autosomes X YY 8 a Sex chromosomes Metaphase II Gametes Metaphase I A X { Xy Xy aa XX AA aa XX YY X X XX a aarrow_forward
- Please draw the diagram and explain. An organism with a diploid number of 6 reproduces sexually and has heterogametic chromosomes in the male. Diagram the stages of meiosis for gametogenesis in a male of this organism. Make certain you identify homologous pairs of chromosomes.arrow_forwardUse the following information as the basis for answering the question: A diploid eukaryotic organism has 4 unique chromosomes. Chromosome I is metacentric, chromosome II is telocentric, chromosome III is a submetacentric, and chromosome IV is acrocentric. Draw a detailed picture of BOTH of the daughter cells produced from Meiosis I of a germ cell from this organism in Metaphase of Meiosis II and label all chromosomal and cellular components. Be sure to label each chromosome (I, II, III, or IV) and include the following in your drawing: centrosomes, 3 kinds of microtubules, metaphase/equatorial plate, and plasma membrane. Use the letter p to indicate a paternal chromosome and m to indicate a maternal chromosome.arrow_forwardplease answer all partsarrow_forward
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