Question

Information about the evolution of brain

Answer 1

helloo....

Human Characteristics: Brains. Endocasts of Homo erectus (left) and Homo sapiens (right) illustrate rapid increase in brain size. As early humans faced new environmental challenges and evolved bigger bodies, they evolved larger and more complex brains. Large, complex brains can process and store a lot of information.

hope it helps...!!

#Dramaqueen⭐

Answer 2

Hi Mate,

The principles that govern the evolution of brain structure are not well understood. Brain to body size[clarification needed] does not scale isometrically (in a linear fashion) but rather allometrically. The brains and bodies of mammals do not scale linearly. Small bodied mammals have relatively large brains compared to their bodies and large mammals (such as whales) have small brains; similar to grow If brain weight is plotted against body weight for primates, the regression line of the sample points can indicate the brain power of a primate species. Lemurs for example fall below this line which means that for a primate of equivalent size, we would expect a larger brain size. Humans lie well above the line indicating that humans are more encephalized than lemurs. In fact, humans are more encephalized than all other primates. The human brain uses 2.5 petabytes, or 2.5 million gigabytes, of storage.

The evolutionary history of the human brain shows primarily a gradually bigger brain relative to body size during the evolutionary path from early primates to hominids and finally to Homo sapiens. Human brain size has been trending upwards since 2 million years ago, with a 3 factor increase. Early australopithecine brains were a little larger than chimpanzee brains. The increase has been seen as larger human brain volume as we progressed along the human timeline of evolution (see Homininae), starting from about 600 cm3 in Homo habilis up to 1600 cm3 in Homo neanderthalensis (male averages). The increase in brain size topped with Neanderthals; Brain size of Homo sapiens varies significantly between population (races), with male averages ranging between about 1,200 to 1,450 cm3.

Hope This Helps You........