asexual and šexual reproduction?2. Compare and contrast gametogenesis of sperm and eggs in mammals. In your comparison, describe threesimilarities and three3. Compare and contrast external versus internal fertilization. Describe at least three major differences.4. What is meant by 'sperm competition'? What is 'second male advantage'? Describe the case study of Drosophilamelanogaster in your text.5. Describe the difference between oviparous, viviparous, and ovoviviparous. What evolutionary pressures wouldfauor onn

Name: asexual and šexual reproduction?2. Compare and contrast gametogenesis
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Description: asexual and šexual reproduction?2. Compare and contrast gametogenesis of sperm and eggs in mammals. In your comparison, describe threesimilarities and three3. Compare and contrast external versus internal fertilization. Describe at least three major

Meiosis is a type of cell division in which there are two sub stages and at the end of the meiosis…

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and eggs in mammals. In your comparison, describe three milarities and three mpare and contrast external versus internal fertilization. Describe at least three major differences. nat is meant by 'sperm competition'? What is 'second male advantage'? Descrihe the caro ctudu

and eggs in mammals. In your comparison, describe three milarities and three mpare and contrast external versus internal fertilization. Describe at least three major differences. nat is meant by 'sperm competition'? What is 'second male advantage'? Descrihe the caro ctudu

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter49: Animal Reproduction

Section: Chapter Questions

Problem 18TYK

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asexual and šexual reproduction?
2. Compare and contrast gametogenesis of sperm and eggs in mammals. In your comparison, describe three
similarities and three
3. Compare and contrast external versus internal fertilization. Describe at least three major differences.
4. What is meant by 'sperm competition'? What is 'second male advantage'? Describe the case study of Drosophila
melanogaster in your text.
5. Describe the difference between oviparous, viviparous, and ovoviviparous. What evolutionary pressures would
fauor onn

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Let's Check Activity 9. Let us try to check your understanding of the discussion. Read the questions carefully. Encircle the letter that corresponds to the correct answer. 1. Which of the following pairs share 50% of their genes? Any two siblings A pair of dyzogotic twins A pair of monozygotic twins a and b 2. Regarding types of multiple pregnancy, which of the following are true? a. Dizygotic twins result from fertilization of different oocytes by the same sperm. b. Monozygotic twins result from mitotic division of a single zygote into 'identical' twins. c. Dizygotic twins result from the division of a single fertilized egg. d. Monozygotic twins result from 2 egg cells merged together, eventually fertilized by a sperm cell. 3. Fraternal twins make up approximately. of the twin population.
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24) The process of gametogenesis starts with a stem cell in the gonads and produces gametes used in sexual reproduction. For the process of spermatogenesis and oogenesis in mammals, complete the following table: Spermatogenesis Gamete type produced Location occurs Number of haploid cells produced Life-stage that the process begins Life-stage that the process ends Oogenesis
Please fill in the blank
Discuss Concepts Arguably, in sexually reproducing animals, development begins when eggs and sperm form in the parents. In a paragraph, explain the rationale for this idea.
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Thank you
Platypus have an n value of 26. How many chromatids, chromosomes and tetrads does a developing gamete cell have in a platypus during metaphase I, metaphase II and in the mature gamete cells?
1. Briefly describe follicular development during the human ovarian cycle and how this is coordinated with the uterine cycle. 2. What assumptions are made if the number of CL is used as an indicator of reproductive rate? 3. What do you think would happen to a CL in a species that exhibits diapause (consult your textbook on this)? 4. Where are sperm made (be specific here) and what glands are important for making seminal fluid? 5. Why do the sperm “cork-screw” while swimming? 6. The menstrual cycle provides an example of how endocrine biological clocks regulate reproduction. Can you give TWO other examples?
Do all dioecious species have a homogametic and a heterogametic sex? 1. Yes, because dioecious means that two types of gametes are produced, even in hermaphroditic species. 2. Yes, because all sex-determining systems include heterogametic and homogametic sexes. 3. Yes, because in dioecious organisms, either the XX-XY or the ZZ-ZW system determines sex. XY and ZW individuals are heterogametic. XX and ZZ individuals are homogametic. 4. No, because hermaphrodites and species that reproduce asexually are dioecious. 5. No, because dioecious means that the sexes are separate, regardless of how sex is determined. In some dioecious species, sex is determined by a single gene.
1. Warm-up question. During the process of human sexual reproduction, the identical twins are the result of: c. one eggs released by any of two ovaries, during regular ovulation, subsequently fertilized by two different sperm cells. d. one eggs released by any of two ovaries, during regular ovulation, subsequently fertilized by a single sperm cell. b. two eggs released by two ovaries, during somewhat abnormal ovulation, subsequently fertilized by two different sperm cells. a. two eggs released by the same ovary, during somewhat abnormal ovulation, subsequently fertilized by two different sperm cells.
1 3. Enzymes are important during the process of fertilization. What would be the anticipated consequences if the level of acrosin was low or non-existent in the acrosome? 5. The Sperm would not be able to break through the protective coat on the egg (zona pellucida). meaning the sperm are unable to fertilize anegg 4. The morula contributes to a layer that becomes the embryo and to cells that become the placenta. What are the names of these structures? Illustrate and label these layers/structures. What is the name of the outer cell layer of the blastocyst and what does it give rise to? Does this layer contribute to the development of the embryo? 6. Explain the origins of the blastocyst cavity and what purpose does it serve? 7. Describe implantation of a blastocyst using simple, labeled diagrams.