1. | About 15 mya, primates called Dryopithecus and Ramapithecus were existing |
2. | Ramapithecus was more ape like |
3. | Homo erectus had a large brain around 900 cm3 |
4. | The brain capacities were between 650 to 800 cm3 of Homo habilis |
1. | DNA from sex chromosomes only |
2. | Chromosome morphology only |
3. | Fossil remains |
4. | Banding pattern of autosomes |