EVIDENCE OF EVOLUTION

• Evolution: Change in the characteristics of organisms over time due to the need to survive and reproduce.
• Fossil Record: All the fossils ever discovered on Earth.
• Types of fossilization: Mineralization and carbonization.
• Types of fossils: Molds and casts, trace fossils, and original material.
• Determining the fossil's age: Relative-age dating and absolute-age dating (radiometric dating).
• Geological Time Scale: Divides Earth's history into different time units using fossils.
• Comparative Evidences: Study of similarities and differences among the structures of living species.
• Development Biology: Study of the development of embryos from fertilization to birth.
• Pharyngeal Pouches: Pouches seen in human and different species during embryo development.
• types of fossils:

  1.) Molds and Cast

  • Mold- impression of an organism
  • Cast- a fossil copy of an organism

  2.) Trace Fossils

  • the preserves evidence of an activity of an organism

  3.) Original Material

  • organism are buried in the absence of oxygen for a long period of time
• Relative-Age Dating determine the relative order in which rock layers were deposited principle of superposition. It uses "older" and "younger" to state the age.
• Absolute-Age Dating uses radioactive decay, a natural clocklike process in rocks, to learn a rock's absolute age. This is more precise that relative-age dating This method uses numerical terms/words
• Radiometric Dating- how much radioactive decay has occured in an object to determine the age.
• Geological Time Scale is a chart that divides Earth's history into different time units. It uses fossil to make time boundaries
• 3 classifications of structures: Homologous, Analogous, and Vestigial.
• Homologous Structure is body parts of an organism that are similar in structure but different in function
• Analogous Structure is the body parts of an organism with different structure but similar in functions
• Vestigial are body parts that have lost their original function through evolution
• Molecular Biology is the study of gene function and structure