Human evolution, Science

Assignment Help:

Human Evolution:

Charles Darwin in  the 'Origin of Species' gave a lilechanism for the evolution of  plants and animals in general, even  though he had speculated about the origin of man. Four years later, he published  the "Descent of Man",  in which he speculated that like other animals, man too had evolved form pre-existing  living forms. Darwin was greatly impressed by  the similarities in  the bodily structure of man and thegreat African apes, the Chimpanzee and the Gorilla.

From this, he speculated on the location of man's origins. In his own words, "In each great region of  the world, the living mammals are closely related to the extinct species of  the same region.  It  is, therefore, probable that Africa was formerly inhabited by extinct apes, closely allied tothe gorilla and chimpanzee; and as these two species are now man's nearest allies, it is somewhat more than probable, that our early ancestors lived on the African  continent than elsewhere". Darwin had noted that embryos, i.e.  early unborn young ones, of  different organisms pass through very similar stages. However, small alterations in the timings of  events in early development might produce a substantial change in the mature organism; for example in many ways adult humans are like juvenile apes,  their small faces and globular cranium bones enclosing the brain  are indicative of  this.

 

953_Human Evolution.png

A  crucial step in human evolution, enlargement of  the brain, can be seen as a result of  the slowing down of  development  in the embryo of  an ape-like ancestor. Instead of stopping at birth, brain growth continues well  into childhood, eventually producing a much larger and more complicated piece of  mental machinery. 


Related Discussions:- Human evolution

Write a brief note on nccam with its purpose, Question 1 Enlist the seven ...

Question 1 Enlist the seven natural principles of the body according to Unani system Question 2 List and explain the types of treatments (chikitsas) of Ayurveda. Classify the

To show how water rises in different types of soil, To show how water rises...

To show how water rises in different types of soil Place about 15 cm of dissimilar types of soil in a series of lamp chimneys after tying a piece of cloth over the end of every

#titlrespiratione.., what are the four characteristics of respiratory surfa...

what are the four characteristics of respiratory surface

Chemical properties, What are the chemical properties of acetic acid?

What are the chemical properties of acetic acid?

What forces are important for generating wind, Question: a) Define atmo...

Question: a) Define atmospheric pressure, stating clearly its unit in meteorology. The atmospheric pressure at the foot of hill is 1013 hPa. What would be the pressure at th

Flammable solids, Flammable Solids : Flammable solids are substances which...

Flammable Solids : Flammable solids are substances which are flammable or liable to spontaneous combustion or emit flammable gases on contact with water. Examples are: camphor, ci

Define colorimetric method for the estimation of phosphorous, Define Colori...

Define Colorimetric Method for the Estimation of Phosphorous Estimation of phosphorous is based upon the principle of colorimetry. Many methods for quantitative analysis are ba

Night sky, Night Sky: When you look up at the sky on a clear night, wha...

Night Sky: When you look up at the sky on a clear night, what do you-see? Most of  it is dotted with twinkling stars. You may see the moon or Venus as a bright point or Mars as

Nursing responsibilities, what are the different types ofnursing responsibi...

what are the different types ofnursing responsibilities in lab test

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd