2nd sem finals

• Charles Darwin believed that the desires or felt needs of animals have nothing to do with how they evolve and that changes in an organism during its lifetime do not affect the evolution of the species
• As we have already seen, all living things pass on information from generation to generation using the DNA molecule.
• All living things also use a molecule called ATP to carry energy around the organism.

   
• Evidence 2: Similar Genes

  If evolution is true, then we might also expect that closely related organisms will be more similar to one another than more distantly related organisms.

  Comparison of the human genetic code with that of other organisms show that chimpanzees are nearly genetically identical (differ by less than 1.2%) whereas the mouse differs by ≈15%.
• Evidence 3: Comparative Anatomy

  Similar comparisons can be made based on anatomical evidence. The skeleton of humans and gorillas are very similar suggesting they shared a recent common ancestor, but very different from the more distantly related woodlouse, yet all have a common shared characteristic: the bilateral symmetry
• Evidence 4: Homology

  Homology refers to an anatomical feature possessed by an ancestor that has subsequently been modified by its descendents for a specific function. Take, for example, the pentadactyl limb.
• Evidence 5: Vestigial Structures

  As evolution progresses, some structures get side-lined as they are no longer of use. These are known as vestigial structures.The coccyx is a much reduced version of an ancestral tail, which was formerly adapted to aid balance and climbing. Another vestigial structure in humans is the appendix.