HUEC 1000 Chapter : FOOD SAFETY REAMES F 2011
Document Summary
*280 million years ago tetrapod- came after tiktaalik, primarily lived on land. Dr. neil shubin- one of the scientists credited for discovering tiktaalik. Your inner fish- a journey into the 3. 5 billion year history of the human body. Arm bones are prevalent from fish all the way to humans. Transition from gills to lungs: comparative anatomy. Similar environmental forces select for similar structures in unrelated organisms. Ex: the ability of flight (birds and insects both have wings but are very different) Evolution of flight through the lineage of birds and insects in different ways- Developed certain abilities like to fly in order to eat or not to be eaten vestigial structures. Rudimentary form of an organ more fully formed in ancestor. May eventually become useless for one animal and disappear over time. ***know difference between structure types: developmental biology. Animal embryos and human embryos have many same characteristics.
