PPT-D3 Human Evolution

Assessment Statements Outline the method for dating rocks and fossils using radioisotopes with references to 14 C and 40 K Define halflife Deduce the approximate age of materials based on a simple decay curve for a radioisotope. Variation in Living Things. SPECIES  - Group of organisms that interbreed. VARIATION - small differences between individuals of a species  . Some neither helpful nor harmful  . Some enable organism to be better suited to its environment.. Who are we? . Where did we come from? . What is the human genealogy? . These are basic questions that we all ask. Humans did not evolve . from. Apes. You are . descended. from your mother and father. Bio . HL. Full Classification of Humans. Kingdom - . Animalia. Phylum - . Chordata. Class - Mammalia. Order - . Primata. Family - . Hominidae. Genus - Homo. Species - Homo sapiens. subspecies - H. s. sapiens. Some important information before we get started:. My website: . www.norrismalvern.weebly.com. My email: . laura.norris@tdsb.on.ca. Spelling and grammar are very important to me!. Brain storm, what is . Ancient hominid fossils not accepted as ancestors. Biases in fossil record (from 19. th. century):. Fossil remains of species not that old (Homo erectus & Neanderthal). Found in Asia and Europe. A mechanism for change in populations.. Any change in the . inherited . traits within a population across generations. Individuals better adapted to their environment tend to survive and . produce more offspring. Over 6 million years . our ape-like ancestors evolved into upright walking, tool using and cultural modern humans, spreading out across the globe. There have been many different hominid species in the past, but only one – . Mechanisms of concerted evolution. Unequal cross-over. Gene conversion: non-reciprocal transfer of information between homologous sequences; the main mechanism invoked to explain concerted evolution. Part 1: From ape-like ancestors to modern humans. Part 2: What makes us human? Evolution and adaptation in modern humans. How do scientists study human evolution? . HYPOTHESIS. Prediction. Observation. Human skeletal changes due to . bipedalism. Bipedalism. occurred approximately 4 . mya. .. This has led to . morphological. alterations to the . human skeleton. including changes to the arrangement and size of the bones of the foot, . And Race. Problem:. A proverbial Martian anthropologist is given the task of. classifying the great apes. For simplicity these are the human,. chimpanzee, orangutan, and gorilla.. Which is the “odd species out?” . Chapter 17: Processes of Evolution. Early Beliefs. 19. th. century: discovered species shared many traits, but lived in different parts of the world. Problematic – species only looked similar on the outside, but inside were very different . Evolution. – when a species of plants or animals adapts to their environment in order to survive over a long period of time. Key points!. Species. Plants or Animals. Adaptations. In order to survive. Mike Riddle. m.riddle@verizon.net. www.train2equip.com. www.icr.org. Topics. A history of apemen – the track record. Two case studies. Neandertals. Australopithecines and Lucy. How evolution hinders critical thinking.