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Human history is the record of humankind from prehistory to the present. Modern humans evolved in Africa around 300,000 years ago and initially lived as hunter-gatherers.They migrated out of Africa during the Last Ice Age and had spread across Earth's continental land except Antarctica by the end of the Ice Age 12,000 years ago.
The term man (from Proto-Germanic *mann-"person") and words derived from it can designate any or even all of the human race regardless of their sex or age. In traditional usage, man (without an article) itself refers to the species or to humanity (mankind) as a whole. The Germanic word developed into Old English mann. In Old English, the word ...
It has been argued that human evolution has accelerated since the development of agriculture 10,000 years ago and civilization some 5,000 years ago, resulting, it is claimed, in substantial genetic differences between different current human populations, [209] and more recent research indicates that for some traits, the developments and ...
Women have lighter skin than men of the same population; this has been explained by a higher need for vitamin D in females during pregnancy and lactation. [278] As there are chromosomal differences between females and males, some X and Y chromosome-related conditions and disorders only affect either men or women. [279]
Next, the skull and brains. "The difference between a Gorilla's skull and a man's are truly immense." (p92––93).... "Thus in the important matter of cranial capacity, men differ more widely from one another than they do from the apes; while the lowest apes differ as much, in proportion, from the highest, as the latter does from man" (p95).
Since mutation rate is relatively constant, roughly one half of these changes occurred in the human lineage. Only a very tiny fraction of those fixed differences gave rise to the different phenotypes of humans and chimpanzees and finding those is a great challenge. The vast majority of the differences are neutral and do not affect the phenotype.
A Malayali man with medium skin tone, of medium build, and with facial hair. A man is an adult male human. [a] [2] [3] Before adulthood, a male human is referred to as a boy (a male child or adolescent). Like most other male mammals, a man's genome usually inherits an X chromosome from the mother and a Y chromosome from the father.
The last common ancestor between humans and other apes possibly had a similar method of locomotion. 12-8 Ma The clade currently represented by humans and the genus Pan (chimpanzees and bonobos) splits from the ancestors of the gorillas between c. 12 to 8 Ma. [31] 8-6 Ma Sahelanthropus tchadensis