Summary Of Our True Dawn

According to “Our True Dawn,” the differences between the methods used by the geneticist and the paleontologist in determining when our ancestors split from the apes was based on physiological and molecular connection. With the development of the molecular clock scientist were able to determine the connection between ancestors that paleontologists would put aside if the connection was difficult to connect. As a result, we can determine the time ancestors’ mutations were created and how mutations were introduced into a new population. According to “Our True Dawn,” some of the earliest hominins, such as Sahelanthropus Tchadensis, are being welcomed as possible human ancestors because of the scientific method known as molecular clock. The molecular
According to the “The Birth of Childhood,” Homo erectus developed their brain size and brain matter before birth and after birth. This is because Homo erectus required less developmental nourishing than modern humans. Other information provided by “The Birth of Childhood,” suggests that the Homo erectus died out in 1.6 million years ago. According to “The Birth of Childhood,” suggest that the Homo erectus was the first ancestor to have a similar body plan to the modern human. Such as having a larger brain similar to the modern human. They also found that strong differences between Homo erectus and modern human are based on brain size and body development. On the other hand, some of the evolutionary advantages of postponing reproduction to later in life is due to brain evolution. An advantage of postponing reproduction is that maturation stages are delayed. Therefore, a delayed maturation stage is correlated to a bigger brain size. However, obtaining a bigger brain means that it is metabolically costly to maintain. According to “The Birth of Childhood,” the size of the brain has an association to reproduction