Natural Selection and the Evidence of Evolution - ：自然选择和进化的证据—.ppt

(Inside) On Bottom Half of 5th Flap write: Glue in the following picture Label the following: Speciation a lineage-splitting event that produces two or more separate species 6. Evidences of Evolution Read through the following slides and fill out the information for this page. Some parts you will need to cut out. (Inside) On Top Half of 6th Flap write: Evidences of Evolution Adaptations- structural and physiological Fossil Evidence Anatomical Evidence Embryology Biochemistry Why? Variation that aids an organisms chances of survival in its environment Develop in a species over many generations (Inside) On Bottom Half of 6th Flap write: Structural Adaptations Teeth and Claws Protect against predators Mimicry Enables one species to resemble another Camouflage Enables species to blend with surroundings Physiological Adaptations What are they? Changes in organism’s metabolic processes Example: After years of exposure to specific pesticides, insects and weeds have become resistant 7. Evidences Continued Read through the following slides and fill out the information for this page. Some parts you will need to cut out. (Inside) On Top Half of 7th Flap write: Fossil Evidence Indirect source Provide record of early life As record becomes more complete, the sequence of evolution is clearer Anatomical Evidence Homologous Structures- common evolutionary origin 2. Analogous Structures- no common origin, but similar in function (Inside) On Bottom Half of 7th Flap write: Anatomical Evidence Vestigial- body structure in present day organism that no longer serves original purpose Embryological Evidence Similarities in development before birth Biochemical Evidence All organisms share DNA, ATP and many enzymes among their biochemical molecules Natural Selection and the Evidence of Evolution Evolution Foldable You will be getting seven pieces of paper as part of your foldable and one to help you assemble the foldable. Color each Title box a