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). . Physical Development. Geminal. Period. Conception occurs when sperm successfully fertilizes an ovum. From there the Germinal Period begins and lasts two weeks. . The . fertilized ovum is now known as a zygote. This period is characterized by rapid cell division, the beginning of cell differentiation, and implantation of the zygote into the uterine wall. . The Beginning of the life cycle. Fertilization / Conception. When the males sperm enters the females egg. 1 sperm / 1 egg. Within seconds of fertilization, the surface of the egg changes so that no more sperm may enter the egg. 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. 2014. Start Strong, Finish Strong. Pick up. : . New DSQ paper. Today you will:. Receive clicker number. Learn what happens during each trimester. Review with clickers if time. Homework/Planner:. Quiz on Topic 3-Fetal Development . 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. Fertilization: This is the process whereby the sperm meets the egg and genetic material (chromosomes) is mixed. ½ + ½ = 1 complete set. Implantation: This is the process whereby an embryo becomes embedded within the uterine lining. (Begin on Page 463). Fertilization. In human mating, hundreds of . millions. of sperm are ejaculated into the . vagina. . The sperm then pass through the . cervix. , up through the . uterus. , and into the . September . 12, . 2014 – . Prenatal Development, Birth, and the Newborn Baby. Video. Video – 9 Months in the Womb. Footage of Baby in the Womb. 3D Video of Conception to Birth. Life’s Greatest Miracle – PBS NOVA. 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?. Pregnancy. The common length of pregnancy is about 40 weeks, or 240 days. Conception. From Egg to Embryo. Ovulation. OVUM. female reproductive cell, or egg. Each month, a mature egg (. OVUM. ) is released from one of the women's two ovaries -- this is called . SIGNS OF PREGNANCY. Food Cravings. Headache. Bloated. Overall Tiredness. Backaches. Sore/Swollen Breasts. Implantation Bleeding. MISSED PERIOD. Nausea . “Morning Sickness”. URINE TEST. BLOOD TEST. Fertilization / Conception. When the males sperm enters the females egg. 1 sperm / 1 egg. Within seconds of fertilization, the surface of the egg changes so that no more sperm may enter the egg. Zygote.