PPT-GAMETOGENESIS, FERTILIZATION, CLEAVAGE

Dr Katalin Gallatz THE HUMAN DEVELOPMENT STARTS WITH THE FERTILIZATION During this process the oocyte and s perm unite New organism the ZYGOTA develops. Definition :. Cleavage is a process of rapid and synchronous mitotic cell divisions of the zygote to form numerous cells for building up the offspring’s body . Cleavage differs from other forms of cell division in that it increases the number of cells without increasing the mass.. Cw . Roderick Negrave PhD, RPF, PAg. Research Section Head, Coast Area. FLNRO, Nanaimo. Topics:. Introduction to results from transitional-site fertilization. Urea-only fertilization of mixed stands. gastrulation:reading. Ch 5 p155-. 161 (159-165 in 9. th. edition) . general principles . Ch 8 p286-. 297 (287-297 in 9. th. ) . Bird. Ch8 p298-. 303 (300-304 in 9. th). . Mammals. Mitosis promoting factor. internal fertilization allows animals to reproduce sexually.. internal fertilization requires much less expenditure of resources.. internal fertilization produces more offspring, ensuring rapid population growth.. What is In Vitro Fertilization. IVF is usually used in people with infertility, or with genetic problems. . Mature eggs must be collected as well as mature sperm. . The eggs are fertilized by the sperm in a lab, then they place a few fertilized eggs into a woman’s uterus. . Developmental Biology UNIT I. Contents. . Fertilization: Definition and types . Events of . Fertilization . in Sea Urchin. Fig. 1 Recognition . of Egg . by . Sperm in Sea Urchin and . Mouse. Sperm contact with egg and . Ovum. = female component. Spermatozoa. = male component. Both arise through . meiosis. = cell division where each daughter cell receives ½ genetic material from original cell. Primordial germ cells derived from . El-. Gammal. 2018. Lecture 6. Lecture Objectives:. After reading, the contents of this lecture you should be able to:. Define cleavage and known the transition from fertilization to cleavage.. State cleavage furrow.. by. Krisztina . H.-Minkó. . Semmelweis University, . Department. of . Anatomy. , . Histology. and . Embryology. . Question of time (anatomy vs. gynecology). Zero time?. Fertilization (anatomy) – clinically usually impossible to determine, uncertain. and Fertilization Barry Bean for BioS 90 & 95 12 September 2008 Life is short. Especially if you’re a sperm cell! Used with permission of the artist, Patrick Moberg Try to remember… when you PARENTS, AND PEDIATRICS MARISA PACELLA , MD FELLOW LECTURE JANUARY 28, 2016 CASE  Full term, singleton female  CHOP NICU for hypoglycemia, hyperinsulinism  Consulted CHOP Genetics  His Iyshwary Vigneswaran Warren. 1,2,3. , Christopher Kupitz. 3. , Soichi Wakatsuki. 2,3. Departments of Bioengineering. 1. & Structural Biology. 2. , SLAC National Accelerator Laboratory. 3. . Introduction. Presented By . Ass.lec. . Applied Embryology . Objectives . At the end of the lecture you should know about:. Describe of the cleavage. . Blastocyst formation .. Normal and abnormal implantation.. The stem cells.. Functions. of cleavage:. Produce many cells. To lay the foundation of differences. Characteristics. of cleavage. All division are mitotic. Early division occurs synchronously. Number of cells are increasing but size is progressively decreasing. .