Human Evolution

• Animal A has a tail,scales,cold-blooded and is a vertebrate

  
• Animal B has a tail,scales and is a vertebrate

  
• Animal C has A tail,hair,and is a vertebrate.

  
• Animal D has a tail,hair and is a vertebrate

  
• Animal E is a vertebrate

  
• Primates are a group of vertebrate animals that have amniotic eggs, four limbs, bony skeletons and hair.

  
• afarensis Is not Bidpedal

  
• africanus Is not Bipedal

  
• boisei is bipedal

  
• habilis is bipedal

  
• The fittest means in an evolutionary sense, animals that are able to reproduce and pass on their traits to offspring
• Answer the question

  
• All seven organisms have tails, and gills or gill slits early on in embryological development

  
• Higher Index: two legs Lower Index: all four
• Homologous: similar structure, common ancestors, different functions
• Analogous: different structure, different ancestors, similar functions
• If the Opisthion Index is 20 or more it is bipedal
• If the Opisthion Index is less than 20 it is not bipedal
• Evolution is how an organism changed through time and inherited characteristics.