Cleavage... A. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space B. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg C. Refers to the fusion of haploid gametes to give a diploid zygote D. Produces an embryo with either two or three distinct cell layers E. None of the above

Cleavage... A. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space B. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg C. Refers to the fusion of haploid gametes to give a diploid zygote D. Produces an embryo with either two or three distinct cell layers E. None of the above

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter16: Reproductive Systems

Section: Chapter Questions

Problem 8SQ: Fertilization _____. a. unites the nuclei of a sperm and egg cell b. forms a zygote that has...

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Gastrulation... A. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg B. Refers to the fusion of haploid gametes to give a diploid zygote C. Produces an embryo with either two or three distinct cell layers D. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space E. None of the above
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About sexual reproduction: Involves one parent where a new individual develops being an exact copy of the parent also known as clone and no gamete or reproductive organ is involved O Only the mother contributes with the oocyte or egg where a new individual is formed with an exact copy of the mother's genes O Involves two parents, where each parent contributes with special germ cells or gametes that once united in fertilization, a new individual develops receiving genetic material from both parents and the product of gene recombination O Involves the father only which contributes with special germ cells or spermatozoa that once fertilized, a new individual develops receiving genetic material from the father and the product of gene recombination Next » « Previous
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
In cleavage states what is blastomeres, 2-cell stage, 4-cell stage, and 8-cell stage.
3 View the diagram of fertilization with the sex chromosomes shown below. Identify the disorder that an offspring would have if an egg cell that has an extra copy of the X chromosome were to be fertilized by a sperm cell. Determine the gender of the zygote. Describe the effects of the resulting condition. X 11x X Egg cell X X MI Y Zygote Y Sperm Cell
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.
Fertilization _____. a. unites the nuclei of a sperm and egg cell b. forms a zygote that has chromosomes of both parents c. usually occurs in an oviduct d. all of the above e. a and b but not c
Which of the following statements concerning oogenesis is false? Oogenesis begins before birth. Ova develop from stem cells called oogonia. An ovum completes meiosis II after it is fertilized. About half the oogonia complete mitosis between birth and puberty. By the time of their birth, girls have already lost about 80 percent of their oocytes.
is when an egg is released from the ovary. This typically occurs once a month in females. occurs when the egg is not fertilized. It involves the egg being broken down by enzymes in the uterus, as well as the egg and the uterine lining being expelled from the body. occurs when male and female sex cells unite. Fertilization produces a which eventually turns into an embryo, and later into a fetus, is a word used to describe cell division in a zygote. The zygote undergoes cleavage/cell division to form a hollow ball of cells called a blastocyst. or After the zygote becomes a blastula, the cells keep dividing into a ball of cells that is composed of three germ layers. This ball of cells composed of three germs layers is called a is the process by which cells develop in different ways to perform different functions. Once it has begun, tissues and organs develop rapidly from the three germ layers of the gastrula. About 8 weeks after fertilization, the major organs have begun to develop and…
Which of the following stages of the fertilization process stimulates completion of meiosis II in the oocyte’s nucleus? A. The sperm nucleus and egg nucleus combine to form the genetic material of the zygote B. Sperm release enzymes to digest the protein layer of the secondary oocyte C. The entry of a sperm into the secondary oocyte D. The swimming of sperm from the vagina, through the uterus, and up to an oviduct
ARRANGE THE FOLLOWING EVENTS IN CORRECT SEQUENCE from 1-13: Penetration of the zona pellucida Cortical reaction 1st cleavage Acrosomal membranes rupture, and release their enzyme contents Penetration of the corona radiata Depolarization of egg membranes Migration of cortical cytoplasm to form gray crescent Sperm attach loosely on the zona pellucida Zona reaction Oocyte completes meiotic division ZP3 tenaciously binds acrosome-intact sperm Release of Ca+2 in egg cytoplasm from its bound state Amphimixis