The skull is similar a chimpanzee, except for the more humanlike teeth. The canine teeth are much smaller than those of modern apes, but larger and more pointed than those of humans. Their pelvis and leg bones resemble those of modern man, and they were bipedal. Their bones show that they were physically very strong. Females were significantly smaller than males.
Human and Chimp Cortex Differences In humans Area 4 is almost twice as large as it is in chimpanzees. The part of Area 4 that commands the movement of the leg, foot and toes is smaller in humans than apes. This leaves more room for the part that controls the hand, fingers and thumb. Even bigger is the lower part of human Area 4, related to the mouth and brething and vocal cords. The post central cortex is enlarged the same as Area 4.
Cro-Magnons on the other hand look more like humans do today. They are more slender and not as muscular, with chins and rounder skulls with slightly smaller brains among other traits. From the ancient bones of the Neanderthals, scientists have been able to extract small amounts of DNA. The DNA comparisons to modern humans show no relationship, implying evolutionary separation (Kunzig, 159). Some anthropologists say the small sections of DNA found are not conclusive evidence, because modern humans show just as much variation in DNA.
Chimpanzees are described as humans’ nearest relatives in the animals’ world. There are two species of these intelligent apes and both share about 99 per cent of their DNA with humans, which means that genetically they have more in common with human than with gorillas or orangutans. However, chimpanzees are described based on four major characteristics which are the physical, living behavior, feeding behavior and reproductive behavior (refer to Figure 1 in Appendix 1). The first major characteristic of chimpanzees is the physical description. Chimpanzees have a body adapted for living both in trees and on the ground.
When examining the skull of the gorilla, it is established that there are many similarities and differences between their skulls and the skulls of the spider monkey and humans. With the gorilla skull that was on display many of the skull characteristics were pronounced. When observing the lower jaw or mandible of the gorilla it is shown that the molar teeth are very similar to that of a human. However, the front teeth are more outward and significantly larger compared to humans, especially the canine teeth which are used as a defense mechanism. Unlike humans, the gorilla contains a sagittal crest that connects the mandible to the skull and creates a stronger jaw for the gorilla for the grinding of their food.
They are relatively smaller, slender, and more agile than other apes. They exhibit many characteristics of primates, including flat faces, enlarged brain sizes, grasping hands and feet, arms longer than legs, no tails, and broad chests. Male gibbons are just under 3 ft. in length and weigh about 15 pounds. Furthermore, the evolution of Homo erectus showed more human examination
Females on the other hand are much smaller compared to males and grow up on average to weigh 220 pounds and 51 inches tall. Mountain gorillas are known for having longer and thicker jet-black fur. Older males are known as silverbacks, because they have a short layer of silver hair on their backs that develops with increased age. Another physiological distinction between male and female mountain gorillas is that the males have larger conical shaped heads. The reason for this is that male mountain gorillas have bony crests on the top and back of their skulls.
The gorilla was closer to human than to chimps in ID terms but the difference was so small that it could not be determined with 100% certainty. Studies performed much later were able to resolve this. Chimps are phylogentically closer to humans then to gorillas, but the divergence times that were determined later don’t not differ from the 1967 study greatly. (2) You think it would be easy to differentiate the differences in our DNA from other primates, but in reality it is very hard. About 1.5% of our DNA is different than that of chimpanzees.
Though they are all different colors, shapes, and sizes, they were so different from all the other animals except the apes. They had a lot of things in common and I though that maybe they belonged to the same family or that human could have evolved from the apes. Both humans and apes had prehensile hands, using there thumbs to grasp things. They both have nails not claws, and their eyes are positioned in the front of their heads. They also have similar teeth all with four different kinds.
Neanderthals and modern humans shared a common ancestor up until somewhere between 500,000 and 200,000 years ago. The Neanderthals existed from approximately 200,000 to 28,000 years ago. This places Neanderthals very close to today in terms of human evolution. Neanderthals were very sophisticated, adapted to their environments, but more robust than Homo sapiens. However Neanderthal genes are 99.5 to 99.9% identical to modern humans.