Earliest sexual reproduction
Axis scale: millions of years.
also see cfw_Human timeline and cfw_Nature timeline
The increase in volume of the neocortex also included a rapid increase in
size of the cerebellum. Traditionally the cerebellum has been associated
with a paleocerebellum andarchicerebellum as well as a neocerebellum.
Its function has also traditionally be
From Wikipedia, the free encyclopedia
Human evolution is the evolutionary process that led to the emergence of anatomically modern humans. The topic
typically focuses on the evolutionary history of the primatesin particular th
Africa before their departure. Their still predominantly African descendants
spread to populate the world. A fraction in turn interbred with Denisovans,
probably in south-east Asia, before populating Melanesia.
HLA haplotypes of Neanderthal and Denis
Tim D. White's 1995 discovery of Ardipithecus ramidus, which pushed
back the fossil record to 4.2 million years ago.
In 2000, Martin Pickford and Brigitte Senut discovered, in the Tugen
Hills of Kenya, a 6-million-year-old bipedal hominin which they
behavioral modernity with the development of symbolic culture, language, and specialized lithic technology happened
around 50,000 years ago according to many anthropologists although some suggest a gradual change in behavior
over a longer time span.[1
Louis Leakeyexamining skulls fromOlduvai Gorge, Tanzania
The genetic revolution in studies of human evolution started when Vincent Sarich and Allan Wilson measured the
strength of immunological cross-reactions of blood serum albumin between pairs of creat
Anthropologists in the 1980s were divided regarding some details of
reproductive barriers and migratory dispersals of the Homo genus.
Subsequently, genetics has been used to investigate and resolve these
issues. According to the Sahara pump theory evidenc
Darwin applied the theory of evolution andsexual selection to humans when he published The Descent of Man in
A major problem at that time was the lack of fossil intermediaries. Neanderthal remains were discovered in a
other primates, who are mobile at a much earlier age. The increased
brain growth after birth and the increased dependency of children on
mothers had a big effect upon the female reproductive cycle,  and the
more frequent appearance of alloparentin