Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 46.5, Problem 3CC
Summary Introduction
To explain: The steps that will be bypassed if a sperm nucleus is injected into an oocyte.
Concept introduction: Sperms are produced in the testes of males, and egg cells are produced in the ovary of females. In males, epididymis is a coiled tube that connects the testicle to vas deferens. Vas deferens is a muscular duct through which sperms are propelled out. The fusion of the sperm to egg cell completes the process of fertilization.
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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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- How many sperm cells will be produced by 800 spermatids? (number only) • If there are 50 secondary oocytes, how many polar bodies will be produced at the end of oogenesis? (number only) Felis catus has a total of 76 chromatids at Anaphase. How many chromosomes will be observed in each cell at Prophase II?arrow_forward.What type of abnormality in the sperm that fertilizes a normal egg will produce an XYY zygote? What process can lead to the formation of this abnormal gamete?arrow_forwardDescribe the three major parts of a spermatozoon and state what organelles or cytoskeletal components are contained in each?arrow_forward
- Reproductive physiology (human) a) At the time of ovulation, the released ovum (egg) has completed both meiosis I and meiosis II. b) Because the corpus luteum (CL) is rescued from atresia by hCG early in pregnancy, the CL continues to produce progesterone throughout the 9 months of a normal pregnancy. c) Late in the follicular phase, estrogen participates in a positive feedback loop that leads to a surge in luteinizing hormone and ovulation. d) Both (a) and (b) are correct and (c) is incorrect e) Statements (a), (b) and (c) are all correctarrow_forwardThere are 6 major events in fertilization. Discuss the process of fertilization or conception, with emphasis on the sperm-egg interaction. Proteins on the sperm plasma membrane bind to ZP3 molecules within the zona pellucida of the egg. Why is this event important? Zona binding triggers the acrosome reaction, in which the sperm plasma membrane fuses with the outer acrosomal membrane, causing exocytosis of acrosomal contents. What is in the "acrosomal content"? Acrosomal enzymes begin to dissolve a hole in the zona pellucida. This enzymatic degradation, accompanied by rapid sperm tail beating, moves the sperm through the zona. Where does the sperm intend to reach?arrow_forwardL23. Act. 4– Draw arrows on the diagrams below to trace the journey of sperm from the site of spermatogenesis in the testes to the point of fertilization in the female reproductive tract. List the organs and structures that the sperm travels through below the diagrams. List the organs the sperm travels through from the testes until it leaves the male reproductive tract.arrow_forward
- select ALL that are TRUE about sperm:☑️Meiosis is suspended twice in sperm development; meiosis of sperm is completed when the sperm penetrates an egg ☑️Both the activity of sperm flagella, and the contraction of uterine muscles, are required to propel sperm to the egg in a timely fashion ☑️Each of the four sperm formed by one meiotic event is genetically unique and haploid ☑️ Sperm secrete testosterone which stimulates sustentacular cells to help their development\arrow_forwardDescribe the events taking place during spermatogenesis? Match the different phase of spermatogenesis with he meiotic events taking place?arrow_forwardIn vertebrate animals, spermatogenesis and oogenesis differ, in that 1.) Cytokinesis is unequal in oogenesis whereas it i equal in spermatogenesis 2.) spermatogenesis is not completed until after fertilization occurs, but oogenesis is completed by the time a girl is born 3.) Oogenesis produces four haploid cells, whereas spermatogenesis produces only one functional spermatozoon 4.) Oogensis ends at menopause. Whereas spermatogenesis is finished before birth 5.) Oogensis begins at the onset of sexual maturity whereas spermatogenesis happens in embryonic developmentarrow_forward
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