BIOS 101 Lecture Notes - Lecture 1: Heritability, Miscarriage, Blastocyst
Document Summary
Medical advances of the 20th century and the elimination of deadly diseases- the rise of human population: why the us population is growing- immigrants and a lower fertility rate. In recent decades, there has been an increase in globalization: homo sapiens- larger brain, wider pelvis in females, longer infant dependency, the first civilizations began to develop 5,000 years ago in egypt and what is now part of. Ch 2: sickle cell anemia: these cells are common in african americans- 2 recessive genes have to be inherited in order to get the condition. The heart begins to beat, and the ribs, muscles and digestive track appear. End of the fourth week the embryo is inch long. Buds that will be arms and legs appear in week 5 and webbing falls off fingers and toes in week 8. By the end of the 8th week, the embryo is 1 inch long: fetal period: week 9- birth.
