Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 33, Problem 6TYU
Summary Introduction
Introduction:
Polyps and medusae are the two different stages of life cycles of members of cnidarians like jellyfish, and sea anemones. Polyps reproduce asexually by means of budding and medusae reproduce sexually.
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The diagram below shows a cell during Meiosis II:
a) What phase of Meiosis II is the cell in? How do you know?
b) Assuming all of the chromosomes present during Meiosis II are shown in the figure above, how many chromosomes (counting homologous pairs as two chromosomes) does a gamete from this organism have?
c) Draw the same cell during the same phase of Meiosis I. Label the elements
Mitosis produces 2 daughter cells that are identical to the starting cell. Explain how meíosis is different using
this diagram to help you.
1) How many cells are created through meiosis?
2) Describe the chromosomes in each gamete at the end of meiosis? Are the set of chromosomes in a gamete
identical to the starting cell like they are in mitosis? Are there the same number of chromosomes in each
gamete as the starting cell?
Starting cell's chromosomes:
1А, 1B, 2A, 2B
Interphase
After the S phase of interphase:
4 pairs of sister chromatids
1A 1A 1B 1B
2A 2A 2B 2B
Meiosis has 2 rounds of cell division
1A,
1A,
1B,
1B,
2A
2B
2A
2B
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The diagram below illustrates the lifecycle of the parasite - Toxoplasma gondii. This single celled organism causes the disease, Toxoplasmosis, which can be transferred to humans when cleaning out litter boxes.
Which of the following rows correctly identifies the processes 1, 2, and 3 numbered above?
Select one:
a.
Process 1
Process 2
Process 3
Meiosis
Fertilization
Mitosis
b.
Process 1
Process 2
Process 3
Mitosis
Fertilization
Meiosis
c.
Process 1
Process 2
Process 3
Meiosis
Mitosis
Fertilization
d.
Process 1
Process 2
Process 3
Fertilization
Mitosis
Meiosis
Chapter 33 Solutions
Campbell Biology
Ch. 33.1 - Prob. 1CCCh. 33.1 - Prob. 2CCCh. 33.2 - Compare and contrast the polyp and medusa forms of...Ch. 33.2 - VISUAL SKILLS Use the cnidarian life cycle...Ch. 33.2 - MAKE CONNECTIONS Many new animal body plans...Ch. 33.3 - Prob. 1CCCh. 33.3 - Prob. 2CCCh. 33.3 - MAKE CONNECTIONS Explain how the molluscan foot...Ch. 33.4 - Prob. 1CCCh. 33.4 - Describe two adaptations that have enabled insects...
Ch. 33.4 - MAKE CONNECTIONS Historically, annelids and...Ch. 33.5 - Prob. 1CCCh. 33.5 - WHAT IF? The insect Drosophila melanogaster and...Ch. 33.5 - MAKE CONNECTIONS Describe how the features and...Ch. 33 - Lacking tissues and organs, how do soonges...Ch. 33 - Describe the cnidarian body plan and its two major...Ch. 33 - is the lophotrochozoan clade united by unique...Ch. 33 - Describe some ecological roles of nematodes and...Ch. 33 - You've read that echinoderms and chordates are...Ch. 33 - A land snail, a clam and an octopus all share...Ch. 33 - Prob. 2TYUCh. 33 - The water vascular system of echinoderms (A)...Ch. 33 - Prob. 4TYUCh. 33 - In Figure 33.2, which two main clades branch from...Ch. 33 - Prob. 6TYUCh. 33 - Evolution connection Interpret thf data Draw a...Ch. 33 - Prob. 8TYUCh. 33 - Prob. 9TYUCh. 33 - SYNTHESIZE YOUR KNOWLEDGE Colleclively, do these...
Knowledge Booster
Similar questions
- Truffles (Tuber borchi) have 2n=8 chromosomes. For the mitotic and meiotic stages below, draw the chromosomes and chromatids, and give the number of homologous pairs, chromosomes, and chromatids present. Be sure to differentiate homologous chromosomes by using size, shape, or other labeling mechanism. Metaphase of mitosis ( # homologous pairs # chromosomes # chromatids Anaphase of meiosis II – draw and count chromosomes for only 1 cell ( # homologous pairs # chromosomes # chromatidsarrow_forwardWhy is parthenogenesis in bees considered to be a form of asexual reproduction? Select one: a. The male drone is made from a haploid egg. Fertilization is not part of the process to make a male drone. b. The formation of the original haploid cell was achieved using binary fission. c. Although genetic material is transferred from one cell to another using conjugation, the resulting cells will be identical to each other. d. The haploid male bees were made through the process of meiosis, so they are identical to the parent egg cell.arrow_forwardThe following four questions refer to the picture below: 1) In meiosis, the homologous chromosomes are side by side. Are they side by side in mitosis? 2)In meiosis, each centromere has a spindle fiber attached only to one side. In mitosis, each centromere has a spindle attached to how many sides? 3) Look at what happened right after Metaphase in both processes. In mitosis, what has been separated homologous chromosomes or sister chromatids? 4) After Metaphase I in meiosis, what has been separated, homologous chromosomes or sister chromatids?arrow_forward
- What are some of the key differences between mitosis and meiosis? Select all that apply. Reduction division occurs in meiosis only. Mitosis produces four daughter cells and meiosis only produces two. Gametogensis occurs in mitosis only. Meiosis produces four daughter cells and mitosis only produces two. Mitosis produces cells that are genetically identical to the parent cell whereas meiosis produces cells that only have half the genetic material of the parents. Both Mitosis and meiosis produce cells that are genetically identical to the parent cell.arrow_forwardTwo haploid yeast with the genotypes HIS4 LEU2 LYS2 and his4 leu2 lys2 were mated to produce diploid yeast. Next, the resulting diploid yeast went through meiosis and formed haploid spores. Read the 4 statements below. For each statement, either put “yes” if you agree with it or put “no” if you don’t. Explain your logic. yes/no 1. Half of the spores will be His+ and half will be His- 2. Half of the spores will be Leu+ and half will be Leu- 3. Half of the spores will be Lys+ and half will be Lys- 4. Half of the spores will be His+ Leu+ Lys+ and half will be His- Leu- Lys-arrow_forwardPlasmogamy is the fusion of(a) two haploid cells including their nuclei.(b) two haploid cells without nuclear fusion.(c) sperm and egg.(d) sperm and two polar nuclei. Please try to break the solutions into as many steps as practically possible and the steps should come one by one and they should be short and crisp and plagiarism-free.arrow_forward
- The developing egg cell of a plant with a diploid chromosome number 20 was treated with colchicine. A normal sperm cell subsequently fertilized this egg. How many chromosomes would you expect to find in the zygote? Explain.arrow_forwardHow many homologous pairs of chromosomes would be in the zygote if it were a male organism? Explain.arrow_forwardAt the end of mitosis in Aedes aegypti, each of the daughter cells will have chromosomes; however, at the end of meiosis, each daughter cell will end up with chromosomes.arrow_forward
- Which of the following statements does BEST compare the processes of mitosis and meiosis? Group of answer choices Mitosis involves two division cycles and results in haploid gametes, while meiosis consists of one division cycle and results in a diploid daughter cell Mitosis involves two division cycles and results in diploid daughter cells, while meiosis consists of one division cycle and results in haploid gametes. Mitosis involves one division cycle and results in diploid daughter cells, while meiosis consists of two division cycles and results in haploid gametes. Mitosis involves one division cycle and results in haploid gametes, while meiosis consists of two division cycles and results in diploid daughter cells.arrow_forwardEach sperm of a tomato plant contains seven chromosomes. What are the haploid and diploid number for tomatoes? haploid=7 and diploid=14 haploid=14 and diploid=7 haploid=7 and diploid=49 haploid=3 and diploid=7arrow_forwardIn prophase II of meiosis, each daughter cell is _____. A) diploid, and the chromosomes are each composed of a single chromatid B) diploid, and the chromosomes are each composed of two chromatids C) haploid, and the chromosomes are each composed of a single chromatid D) haploid, and the chromosomes are each composed of two chromatidsarrow_forward
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