Template:Week 1 table

Week 1 (GA Clinical week 3)
Week 1 of fertilisation age begins on the day of fertilisation, while the clinical gestational age (GA) is measured from the first day of the last menstrual period (LMP). Concepts Gametogenesis (Oocyte and Spermatozoa), Meiosis, Menstrual Cycle Fertilisation, Zygote, Zona Pellucida, Polar Body, Mitosis, X inactivation Blastomeres, Morula, Blastocyst (Inner cell mass and Trophoblast), Twinning	Week 1 summary
Week 1 Timeline   Day Carnegie Stage Concepts 1 1 Zygote, Menstrual Cycle - Secretory Phase 2 2 Morula, Mitosis 3-5 3 Blastocyst
Week 1 Links: stage 1 | stage 2 | stage 3 | menstrual cycle | fertilization | zygote | morula | blastocyst | Lecture - Fertilization | meiosis | mitosis | Lecture - Week 1 and 2 | menstrual cycle | oocyte | spermatozoa | twinning | Genetic risk maternal age | Trisomy 21 | Trisomy 18 | Trisomy 13 | hydatidiform mole | GA week 3

Day	Stage	Event
1	Secretory Phase Stage 1	Fertilization, Secretory Phase
2	Stage 2	Morula, Blastula
3		Blastocyst Development
4	Stage 3	Blastocyst Hatching (zona pellucida lost)
5		Late Secretory, Blastocyst (free floating)
6	Stage 4	Adplantation
7	Stage 5