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Sperm What is involved in the maturation of a sperm cell?
Sperm How does flagellar structure contribute to sperm motility?
Egg Why is egg so much larger than sperm? yolk proteins yolk proteins ribosomes ribosomes t-RNA t-RNA m-RNA m-RNA morphogenic factors morphogenic factors protective chemicals protective chemicals
Egg What are some of the structural components of the egg?
Egg When sperm enters at what meiotic stage is the egg?
Sperm Attraction What is chemotaxis? 1 2 3 4
Sperm Attraction What is a sperm-activating peptide?
Sperm – Egg Interaction What is involved in the acrosomal reaction in sea urchins?
Sperm – Egg Interaction What role does the bindin protein play in this interaction?
Sperm – Egg Interaction How does gamete recognition and binding occur in mammals?
Sperm – Egg Interaction What follows the initial penetration of egg by the sperm?
Sperm – Egg Interaction What makes this interaction in mammals different?
Preventing Polyspermy Why is polyspermy a problem?
Preventing Polyspermy What two mechanisms exist in sea urchins to prevent polyspermy?
How is the cortical granule reaction different in mammals? Why is calcium so important to the cortical granule reaction?
Egg Activation How does egg metabolism respond to stimulation by sperm?
Egg Activation What signaling pathway releases intracellular calcium ion concentration?
Fusion of Genetic Material What does the sperm contribute to the developing embryo? What must happen for fusion to occur in sea urchins? How is the fusion different in mammals?
Rearrangement of Egg Cytoplasm What kind of cytoplamic rearrangement occurs as a result of fertilization?
Fertilization Structure of Gametes External vs Internal Fertilization Sperm Attraction Sperm Binding to Egg and subsequent fusion Activation.
Animal Development I Where it all begins…
FERTILIZATION Gametes: fuse to create a new organism sex: combining the genes of both parents reproduction: creation of a new organism Steps.Contact and.
Chapter 7- Fertilization Late _____- _______________- sperm are parasites? Late ______- _____________- Sperm are still parasites? Early ______- ________-
Fertilization: Part 2: Prevention of Polyspermy Gilbert - Chapter 7 pp
Development. Fertilization Chemotaxis Sea Urchin’s eggs have a chemotatic molecule called resact. This molecule is found in the outer jelly coat of.
Fertilization Eggs/sperms are destined to die within minutes, hours or days unless fertilization occurs. Activation of the egg Fusion of the haploid gametes.
Embryonic Development Involves 3 Components: 1. Cell Division- The mitotic increase in the number of cells. 2. Differentiation- The development of specialized.
An organism’s development is planned by a genetic program involving the genome of the zygote and the molecules placed in the egg by the mother › These.
Animal Development II Making an embryo…
Figure 47.0 Human embryo. Figure 47.1 A “homunculus” inside the head of a human sperm.
Structure of the Gametes Gilbert Ch. 7 pp
By Dr Samina Anjum. Fertilization is the process by which fusion of male and female gametes occurs in the ampullary region of the uterine tube.
Fertilization Fertilization activates the egg Activation of the egg triggers embryonic development.
Animal Development Chapter 47. WHAT’S NEXT? Once copulation ends…
FERTILIZATION. Fertilization What are the factors that affect the sperm’s potential for successfully fertilizing the egg? The process by which the sperm.
Oogenesis Behind every successful embryo stands a hard-working mother.
Fertilization Zuzana Kollarova. Fertilization The process by which the nucleus of a sperm fuses with the nucleus of an egg. Occurs in the fallopian tubes.
Chapter 42 Lecture 22 Asexual and sexual reproduction Dr. Tony Michael.
Fertilization a process at the beginning of ourselves.
HUMAN EMBRYOLOGY Mrs. Daniels AP Biology December 2005.
Ch. 47. THE STAGES OF EARLY EMBRYONIC DEVELOPMENT.
Seminiferous Tubules (human) Ovary (cat) Ovum (squirrel)
Fertilization. Learning Objective Describe the four processes involved in fertilization.
6.2 Process of Meiosis KEY CONCEPT During meiosis, diploid cells undergo two cell divisions that result in haploid cells.
Animal Reproduction. Reproduction is asexual or sexual –asexual reproduction offspring genetically identical to parent and siblings saves costs of sexual.
Animal Development Chapter 47. The Miracle of Life Human embryo.
Fertilization: The Beginning of Development in a New Organism Lange BIOL 370 – Developmental Biology Topic #4.
Ch. 46/47 Warm-Up 1.(Ch. 46) How do oogenesis and spermatogenesis differ? 2.(Ch. 46) How do these hormones affect the menstrual cycle? a)LH b)FSH c)Estrogen.
Step one: Contact between the sperm and the eggshell.
Animal Development. The Mystery of Development The main problem of embryology is this: How, in the course of development, does a cell of one type.
Development determined by zygote genome & distribution of maternal substance ( cytoplasmic determinants ) in egg Location of cells affects early development.
Animal Development Campbell’s Biology Ch 43 – 4 th ed./Ch 47 – 6 th ed.
Early Development Chapter 21. Early Development Highly variable among different organisms Highly variable among different organisms Common genetic and.
Animal Development Chapter 47. Slide 2 of 13 Post-fertilization After fertilization, embryology occurs Embryology is the development of the zygote.
The Egg. Egg Microvilli Zona Pellucida Zp Zona Pellucida Glycoproteins.
Sperm Transport in the Female Genital Tract of Different Animals Deposition of semen by male: Sperm deposited in the cranial part of the vagina of cow,
The Ovum Like any ordinary cell in its structure. It is large oval cell which varies from µ in diameters. Coverings: a.has 2 membrane: an inner.
Reproductive Systems 3-D male reproductive System 3-D female reproductive System.
Chapter 47: Animal Development Theories of embryonic development Preformation Preformation Belief that egg or sperm contain a miniature embryo/adult form.
By Dr Samina Anjum. PREVIEW FERTILIZATION CLEAVAGE BLASTOCYST FORMATION UTERUS AT THE TIME OF IMPLANTATION MENSTRUAL CYCLE.
Fertilization in animals can be internal or external Fertilization is the fusion of egg & sperm to form a zygote (1 celled organism) What.
Meiosis vs. Mitosis Animation Animation ▫1 division ▫daughter cells genetically identical to parent ▫produces 2 cells ▫2n 2n ▫produce cells for growth.
Lecture 16: Fertilization Animal Science 434 John J. Parrish.
Lab 11 Survey of Embryonic Development. Lab 11 Hormonal controls of the menstrual (ovarian and uterine) cycles Fertilization, implantation, and early.
1 Vertebrate Development Chapter Fertilization Penetration – hydrolytic enzymes in acrosome of sperm head Activation – events initiated by sperm.
6.1 Chromosomes and Meiosis KEY CONCEPT Gametes (sex cells) have half the number of chromosomes that body cells have.
Chapter 47 Animal Development Ms. Klinkhachorn Saturday April 30, 2011 AP Biology.
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