PPT-Chapter 7 Conception and Development of the Embryo and Fetus

Basic Concepts of Inheritance Human Genome Project 1990 Chromosomes 23 matched pairs DNA Genes Cellular Division Gametes Ova female gamete Sperm male gamete Gametogenesis Meiosis. Beginning of life. Fertilization: Unite egg and sperm— . becomes zygote. Implantation: zygote reaches uterus in 4-5 days and attaches to uterine wall—then is called an embryo when it attaches. Revised . Fall 2012. How does the Female Body Prepare for Conception?. Describe the process of maturation of an ovum. Menstrual Cycle. Varies every 28 - 35 days. The time between ovulation and menstruation is relatively constant (14 days). . Fertilization. After breeding, the sperm and egg unite to form a . zygote. . After the nuclei have fused the zygote becomes an . embryo. . Embryos do not have any anatomical form.. Fertilization. Fetus. Signs of pregnancy. Missing menstrual period. Pregnancy tests. these tests detect the presence of . hCG. (human chorionic . gonadotrophin. ) in the urine . hCG. is produced by the developing embryo and is present is a woman’s urine only when she is pregnant. Chapter 51. Section 3. Fertilization. From the moment of fertilization until the time of birth, about 9 months, is called . gestation. Each sex gamete contains one set of chromosomes. After a sperm penetrates the egg, the egg undergoes meiosis II and the sperms nucleus fuses with the eggs nucleus. Did you know….. “Identical twins” may not be exactly identical?. All but 300 human genes have counterparts in mice?. “Birth defects” do not always appear at birth?. Fetuses can learn and remember while in the womb, and they respond to their mother’s voice?. Movements. (Morrison et al, 2009). Michelle, Kyle P, Ellen. Introduction. Depending on the stage of a women’s menstrual cycle, preferences in women’s behaviors change. Height . (. Pawlowski. & . ZIMS Updates!. This PowerPoint is up-to-date as of:. November 12. th. 2018. ZIMS is developed in an “agile” method. This . means that it is updated every two weeks, sometimes with additional releases in between!. ZIMS Updates!. This PowerPoint is up-to-date as of:. November 12. th. 2018. ZIMS is developed in an “agile” method. This . means that it is updated every two weeks, sometimes with additional releases in between!. personhood What is personhood? Are you a person? What about Superman? C-3PO? A 9-month-old baby? A fetus? Person: a philosophical term – a being who is part of a moral community Human: biological term – a being containing human DNA & . Programming Priorities for HIV-affected Individuals and . Couples. Dr. Nelly . Rwamba. Mugo . Kenya Medical Research Institute (KEMRI. ), Center for Clinical Research. University of Washington-ICRC, Department of Global Health. (Monocot and . Dicot. ). The zygote gives rise to an embryo by a predetermined series of cell divisions and cell differentiations . This process is called . embryogenesis. . The . embryo . then germinates and grows into an adult plant. In seed plants, embryogenesis occurs within the embryo sac of the ovule. . Assistant Professor. Dept. of Botany. Annai. . Vailankanni. . Arts . and Science College. Thanjavur. – 613 007.. Introduction. Endosperm is the tissue produced inside the seeds of most flowering plants around the time of fertilization. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein. . Dr. S. N. Shukla Associate Professor Department of Veterinary Gynaecology & Obstetrics, CoVSc . & AH, NDVSU, Jabalpur Diseases and accidents of gestation 1. Extrauterine pregnancies 2. Dropsy of fe