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

Explain undifferentiated cells in an organism, Explain Undifferentiated Cel...

Explain Undifferentiated Cells in an Organism These cells are capable of undergoing division and development, for example, the stem cells (animals) and meristematic cells (plan

Explain the dialysis, Explain the Dialysis   By now, you must have w...

Explain the Dialysis   By now, you must have well understood the functions of kidney and the implications of abnormal kidney functioning as well. Here in this section, we sh

Kepler''s laws of planetary motion, Kepler's  Laws of Planetary Motion: ...

Kepler's  Laws of Planetary Motion: Further support to the heliocentric model came from the work of Johannes Kepler at around the same time as Galileo's observations. Kepler, a

Motion in one dimension, what is the speed and velocity of a car that trave...

what is the speed and velocity of a car that travels 32 meters to the east and 12 meters in the same direction? the total time of travel in 3.0 seconds

Explain the process of freezing, Explain the process of Freezing Freezi...

Explain the process of Freezing Freezing, as a method, is the easiest, most  convenient and least time-consuming way of preserving foods. Freezing does not sterilize foods or d

Explain different regions of a pressure volume diagram, 1.  Sketch and expl...

1.  Sketch and explain different regions of a pressure-volume diagram of a full cardiac cycle.   2.  Sketch and explain the relationship between cardiac output and end-diastolic v

Moon- earth companion, The Moon, the Earth's  Companion What do you norr...

The Moon, the Earth's  Companion What do you norrqally observe about the Moon? Itshinesbrightest, whenever present in the night sky. It seems to go through phases and it seems t

Emergence of science, Emergence of Science: We gave you a glimpse of ...

Emergence of Science: We gave you a glimpse of  the social structure in  India during the Iron Age. With the emergence of ordered urban societies, the stage was set for a tre

What makes a mineral a mineral explain properties of mineral, what makes a ...

what makes a mineral a mineral? The properties of minerals: There are seven main properties that are used to describe and classify any mineral found. All seven properties are

About maths, Is zero an positive integer ?

Is zero an positive integer ?

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