Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 46, Problem 13TYU
SYNTHESIZE YOUR KNOWLEDGE
A female Komodo dragon (Varanus komodoensis) kept in isolation in a zoo had progeny. Each of the offspring had two identical copies of every gene in its genome. However, the offspring were not identical to one another. Based on your understanding of parthenogenesis and meiosis, propose a hypothesis to explain these observations.
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Chapter 46 Solutions
Campbell Biology
Ch. 46.1 - Compare and contrast the outcomes of asexual and...Ch. 46.1 - Parthenogenesis is the most common form of asexual...Ch. 46.1 - WHAT IF? If a hermaphrodite self-fertilizes, will...Ch. 46.1 - Prob. 4CCCh. 46.2 - How does internal fertilization facilitate life on...Ch. 46.2 - What mechanisms have evolved in animals with (a)...Ch. 46.2 - MAKE CONNECTIONS What are the shared and distinct...Ch. 46.3 - Why might frequent use of a hot tub make it harder...Ch. 46.3 - Prob. 2CCCh. 46.3 - WHAT IF? If each vas deferens in a male was...
Ch. 46.4 - How are the functions of FSH and LH in females and...Ch. 46.4 - How does an estrous cycle differ from a menstrual...Ch. 46.4 - WHAT IF? If a human female begins taking...Ch. 46.4 - Prob. 4CCCh. 46.5 - Prob. 1CCCh. 46.5 - In what ways are tubal ligation and vasectomy...Ch. 46.5 - Prob. 3CCCh. 46 - Would a pair of haploid offspring produced by...Ch. 46 - Identify which of the following, if any, are...Ch. 46 - How does the difference in size and cellular...Ch. 46 - Prob. 46.4CRCh. 46 - Prob. 46.5CRCh. 46 - Prob. 1TYUCh. 46 - In male mammals, excretory and reproductive...Ch. 46 - Prob. 3TYUCh. 46 - Prob. 4TYUCh. 46 - Prob. 5TYUCh. 46 - Prob. 6TYUCh. 46 - Prob. 7TYUCh. 46 - Prob. 8TYUCh. 46 - DRAW IT In human spermatogenesis, mitosis of a...Ch. 46 - Prob. 10TYUCh. 46 - SCIENTIFIC INQUIRY You discover a new egg-laying...Ch. 46 - WRITE ABOUT A THEME: ENERGY AND MATTER In a short...Ch. 46 - SYNTHESIZE YOUR KNOWLEDGE A female Komodo dragon...
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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
- Gametogenesis in mammals is a complex process. When comparing spermatogenesis and oogenesis, indicated whether the follow statements are true or false. After the S phase, both the spermatogonial stem cell and primary oocyte have the same number of double-copy chromosomes. #analyze Question 1 options: True False Both the first polar body and the second polar body have the same number of chromosomes. #analyze Question 2 options: True False After the S phase, both the spermatogonial stem cell and primary oocyte have the same number of double-copy chromosomes. #analyze Question 3 options: True False Both the primary oocyte and the secondary spermatocyte have double-copy chromosomes. #analyze Question 4 options: True Falsearrow_forwardHow do organisms with haploid-dominant life cycles ensure continued genetic diversification in offspring without using a meiotic process to make gametes? Explain your reasoning. Write 3 paragraphs, 3-5 sentences each.arrow_forwardDescribe how meiosis provides for genetic variability.If an animal had a haploid number of two (no sex chromosomes), how many genetically different gametes could it produce? (Assume no crossing over.) What if it had a haploid number of five?arrow_forward
- The diagram in Figure 1 shows a section through the mammalian testis. With reference to this diagram answer the following questions: FIGURE 1 (a) What percentage of each of the following types of cells would you expect to contain an X chromosome. Give a REASON for your answer in each case. i) type cell A ii) type cell B (b)Name the cell type labelled B which under goes mitosis. State the importance of mitosis in a mature testis.arrow_forwardMeiosis in animals is responsible for the formation of what type of cells? (select all the apply)* Gametes Zygote Egg Germ Cells Sex Cells Sperm Body Cells Somatic Cells Mitosis in animals is responsible for the formation of what type of cells? (select all the apply) *arrow_forwardMost sexual organisms are either male or female though some are hermaphroditic. In human beings and Drosophila (fruitfly), the sex of an individual is determined by the kind of sex chromosomes they possess. Males have two types of chromosomes, a big chromosome X and a small chromosome Y while females have only one kind, 2X or XX. The X and Y chromosomes segregate during the formation of mature spermatozoa (sprematogenesis) so that a mature sperm contains only either X or Y. What is the probability of getting an X-bearing sperm? A Y-bearing sperm? How many kinds of ova as to the kind of sex chromosome present can be produce? Determine the probability of getting a boy or girl. Show your calculations.arrow_forward
- Most sexual organisms are either male or female though some are hermaphroditic. In human beings and Drosophila (fruitfly), the sex of an individual is determined by the kind of sex chromosomes they possess. Males have two types of chromosomes, a big chromosome X and a small chromosome Y while females have only one kind, 2X or XX. The X and Y chromosomes segregate during the formation of mature spermatozoa (sprematogenesis) so that a mature sperm contains only either X or Y. What is the probability of getting an X-bearing sperm? A Y-bearing sperm? How many kinds of ova as to the kind of sex chromosome present can be produced? Determine the probability of getting a boy or girl. Show your calculations.arrow_forwardIn your own words: If cell division during gametogenesis were non-meiotic, what would be its consequence for future generations of diploid organisms? Expound.arrow_forwardFertilization is the fusion of haploid gametes, ovum and spermatozoon, to form a diploid zygote. Discuss physiologic mechanisms in the male and the female that make sure that indeed only one sperm fertilizes a single eggarrow_forward
- Why 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_forwardimagine a giraffe whose diploid is 30. A)Under what circumstances would the giraffe go through a process of meiosis? . b) what will be the final result of this meiosis for the giraffe (# of cells + # of chromosomes/cells)arrow_forwardMeiosis is an important cellular process for organisms that reproduce sexually. Two lab partners (A and B) are shown this diagram of a meiotic cell and asked to identify its phase. Partner A believes that this cell is in prophase of the first meiotic division. Partner B believes that this cell has moved past prophase of meiosis I and is in a later phase of meiosis. Which partner is correct, and what evidence accurately would defend their belief? Partner A is correct. The chromosomes have clearly replicated during interphase and are beginning to decondense into chromatin. O Partner A is correct. The nuclear membrane is beginning to re-form and centrioles are beginning to migrate to opposite poles of the cell. Partner B is correct. Homologous chromosomes are no longer paired together, so the cell must be in first phase of meiosis II, not meiosis I. O Partner B is correct. The cell plate is beginning to form between the two centrioles, indicating the cell is actually in later phase of…arrow_forward
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