CAMPBELL BIOLOGY,AP EDITION
10th Edition
ISBN: 9780133447002
Author: Reece
Publisher: PEARSON
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Textbook Question
Chapter 29.1, Problem 3CC
WHAT IF? Ø What would the human life cycle be like if we had alternation of generations? Assume that the multicellular diploid stage would be similar in form to an adult human.
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WHAT IF? What would the human life cycle be likeif we had alternation of generations? Assume that themulticellular diploid stage would be similar in form to anadult human.
| The Role of Meiosis
Key Idea: There are two types of cell division in eukaryotes,
mitosis and meiosis, but only meiosis produces cells that are
genetically different to the parent cell.
New cells are formed when existing cells divide. There are
two forms of cell division in eukaryotes, mitosis and meiosis.
Mitosis produces two identical daughter cells from a parent
cell. Meiosis is a special type of cell division, and produces
sex cells (gametes or spores) for sexual reproduction. In
sexual reproduction, sex cells from two parents combine to
form an individual that is genetically different to its parents.
The sex cells in humans, called eggs and
sperm, are produced by meiosis. Events
occurring during meiosis creates gametes
with unique combinations of gene variants
and so creates genetic variability.
Sexual reproduction rearranges and
reshuffles the genetic material into new
combinations. This is why family members
may look similar, but they'll never be
identical (except for…
Somatic cells of chimpanzees contain 48 chromosomes.How many chromatids and chromosomes are present at: (a) anaphase of mitosis, (b) anaphase I ofmeiosis, (c) anaphase II of meiosis, (d) G1 priorto mitosis, (e) G2 prior to mitosis, (f) G1 prior tomeiosis I, and (g) prophase of meiosis I?How many chromatids or chromosomes are presentin: (h) an oogonial cell prior to S phase, (i) a spermatid, (j) a primary oocyte arrested prior to ovulation,(k) a secondary oocyte arrested prior to fertilization,(l) a second polar body, and (m) a chimpanzee sperm?
Chapter 29 Solutions
CAMPBELL BIOLOGY,AP EDITION
Ch. 29.1 - Why do researchers identify the charophytes rather...Ch. 29.1 - Identify four derived traits that distinguish...Ch. 29.1 - WHAT IF? What would the human life cycle be like...Ch. 29.1 - Prob. 4CCCh. 29.2 - Prob. 1CCCh. 29.2 - Give three examples of how structure fits function...Ch. 29.2 - MAKE CONNECTIONS Review the discussion of...Ch. 29.3 - List the key derived traits found in monilophytes...Ch. 29.3 - Prob. 2CCCh. 29.3 - Prob. 3CC
Ch. 29 - Draw a phylogenetic tree illustrating our current...Ch. 29 - Summarize the ecological importance of mosses.Ch. 29 - What trait(s) allowed vascular plants to grow...Ch. 29 - Three of the following are evidence that...Ch. 29 - Which of the following characteristics of plants...Ch. 29 - In plants, which of the following are produced by...Ch. 29 - Microphylls are found in which plant group? (A)...Ch. 29 - Suppose an efficient conducting system evolved in...Ch. 29 - Identify each of the following structures as...Ch. 29 - EVOLUTION CONNECTION DRAW IT Draw a phylogenetic...Ch. 29 - SCIENTIFIC INQUIRY INTERPRET THE DATA Ihe feather...Ch. 29 - WRITE ABOUT A THEME: INTERACTIONS Giant lycophyte...Ch. 29 - SYNTHESIZE YOUR KNOWLEDGE These stomata are from...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- MAKE 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_forwardlet's imagine a giraffe whose diploid is 30. 1)Under what circumstances would the giraffe go through a process of mitosis. 2) what will be the final result of this mitosis for the giraffe? (# of cells + # of chromosomes per cell)arrow_forwardSuppose the diagram below shows a cell during metaphase Meiosis II: microtubule a) Label the elements of the figure. 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 a cell from this organism have immediately after fertilization? Tne left Showarrow_forward
- ..explain why meiosis occurs only in specialized cells (gametes), and that the overall goal of meiosis is to make haploid cells for sexual reproduction • ..outline the sequence of key chromosomal movements and rearrangements during the two meiotic divisions, identifying key similarities and differences between meiosis and mitosis • ..describe the ploidy of a cell before and after meiosis I and meiosis II, and how ploidy changes after separation of sister chromatids and homologous chromosomesarrow_forwardCanvas What do the structures A and B represent ? A O Homologous chromosomes O Non-homologous chromosomes O Non-sister chromatids O Sister chromatids Chp 田arrow_forwardAnimals and plants both have diploid and haploid cells. How does the animal life cycle differ from the alternation of generations exhibited by plants?arrow_forward
- why must sexually reproducing organisms use both processes of mitosis and meiosis, while asexually reproducing organisms only use mitosis?arrow_forward. What is the total number of chromosomes this organism has? • What is the haploid number (n) of this organism? ID each unique shape with a number.... • Is this organism haploid, diploid, triploid, or tetraploid? Put the letter "a" by those chromosomes from one parent and the letter "b" by those from another. 11 • Draw in duplicated chromosomes now....imagine we're in prophase of mitosis... • What is the difference between • 5A vs. 5B? ● 5A vs. 5A copy?arrow_forwardWhat 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_forward
- In order to sexually reproduce, multicellular organisms utilize a process called ______. The type of daughter cells produced by meiosis - sex cells are called ______. Eggs and sperm contain only one copy of each chromosome, so they are _____. A cell that undergoes meiosis produces ______ genetically unique daughter cells. Word Bank: • Mitosis • Meiosis • Gametes • Somatic Cells • Haploid • Diploid • 2 • 4arrow_forward3. The cells shown in the diagram are in various stages of mitosis or meiosis. All the cells come the same individual (a mammal). (a) What is the diploid number of chromosomes in this animal? (b) Give the names of each stage shown. Mannへ Wwwしwarrow_forward1. What is meiosis?2. What specific cells in the body divide through this process?3. Meiosis involves two successive cell divisions. Which of the two is mitotic in nature? Why?4. What particular event in meiosis results to genetic variation? Why?5. Is there a possibility that a problem may occur at any stage of meiosis? If so, what is it and how does itaffect the organism?6. The cells produced after meiosis are haploid, how do these cells restore or maintain the normalchromosome number of the species?7. Why do you think mitosis and meiosis important in the life cycle of an organism?arrow_forward
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