Summary: Darwinism says that random variations are the drivers of evolution, however geographical variations in Australian Koala point to the contrary. Therefore alternative mechanisms of evolution need to be found. Author: Dr Mahesh C. Jain is a practicing medical doctor and has written the book “Encounter of Science with Philosophy – A synthetic view”. The book begins with first chapter devoted to scientifically valid concept of God and then explains cosmic phenomena right from origin of nature and universe up to origin of life and evolution of man. The book includes several chapters devoted to auxiliary concepts and social sciences as corollaries to the concept of God. This is the only book which deals with origin of nature and universe from null or Zero or nothing. Chapter 30 of the book is about Evolution of Life wherein author has worked out a new theory about evolution of life. Visit:http:// www.sciencengod.com http://curatio.in

1. Darwinism versus Variations in Koala Bear
Summary: Darwinism says that random variations are the drivers of evolution,
however geographical variations in Australian Koala point to the contrary.
Therefore alternative mechanisms of evolution need to be found.
The koala (Phascolarctos cinereus) is an arboreal herbivorous marsupial native
to Australia, and the only extant representative of the family Phascolarctidae.
The koala is found in coastal regions of eastern and southern Australia,
from Adelaide to the southern part of Cape York Peninsula. Populations also
extend for considerable distances inland in regions with enough moisture to
support suitable woodlands.
Koalas have been divided into three subspecies and as a matter of rule individuals
from southern cooler climates are larger.
VARIATIONS
A typical Victorian koala (formerly P. cinereus victor) has longer, thicker fur; is a
darker, softer grey, often with chocolate-brown highlights on the back and
forearms; and has a more prominently light-colored ventral side and fluffy white
ear tufts. Typical and New South Wales koala weights are 12 kg (26 lb) for males
and 8.5 kg (19 lb) for females.
The other extreme are Koalas in tropical and sub-tropical Queensland. In
Queensland the koala is smaller (at around 6.5 kg (14 lb) for an average male and
just over 5 kg (11 lb) for an average female); a lighter often rather scruffy grey in
colour; and has shorter, thinner fur. In Queensland, the koala was previously
classified as the subspecies P. cinereus adustus.
Intermediate forms are found in New South Wales named as P. cinereus cinereus.
A fourth variation, though not technically a subspecies, is the "golden koala",
which has a slight golden tinge to the fur as a result of an absence of the melanin
pigment that produces albinism in most other mammalian species.
The variation from one form to another is continuous. There are substantial
differences between individual koalas in any given region such as hair colour.
Koalas may also have white fur in rare cases due to a recessive gene.
Koala fossils are quite rare, but some have been found in northern Australia
dating to 20 million years ago. During this time, the northern half of Australia

2. was rainforest. The fossil record indicates that before 50,000 years ago, giant
koalas inhabited the southern regions of Australia. The koala fills the same
ecological role as the sloths of South America.
Koala lives almost entirely on Eucalyptus leaves. It has firm preferences for
particular varieties of eucalypt and these preferences vary from one region to
another: in the south Manna Gum, Tasmanian Blue Gum, and Swamp Gum are
favoured; Grey Gum and Tallowwood are important in the north, and the
ubiquitous River Red Gum of the isolated seasonal swamps and watercourses that
meander across the dry inland plains allows the koala to live in
surprisingly arid areas. Many factors determine which of the 680 species of
eucalypt trees the koala eats.
DISCUSSION
From the above account of geography related variations in Koala size; fur color,
length and texture; preference for different species of Eucalyptus trees in
different regions it is obvious that 20 million years of existence of Koala in
Australia have been insufficient to eliminate those variations. This is true despite
there being no isolation and ample opportunities for dispersal and migration.
These observations are in accordance with conclusions of J.C. Willis that
dispersibility as an aid to invasion of unoccupied grounds is rarely significant for
the purpose of evolution and the most cosmopolitan genera lacked such
dispersion adaptations.
Darwinism says that evolution advances by accumulation of selected random
variations and species come into being by dispersion of ancestral species followed
by isolation of various populations followed by evolution of different populations
into individual species by further accumulation of variations along divergent lines
ultimately leading to origin of species.
However in the case of Koala bear we find:-
1. Variations are not random, rather they are geography related. Even Darwin
admitted that flora and fauna on Galapagos Islands varied according to
some geographical rule.

3. 2. 20 million years of existence of Koala bear are neither able to eliminate
those differences nor evolve different subspecies into species despite
geographical continuity or lack of geographical isolation or absence of any
barrier to dispersion.
3. Variations as well as species identity have been maintained despite
geographical continuity.
Hence Darwinism can’t be reconciled with geography related variations in
Australian Koala. Therefore Darwinism is not the final word about mechanism of
evolution.
Author: Dr Mahesh C. Jain is a practicing medical doctor and has written the
book “Encounter of Science with Philosophy – A synthetic view”. The book begins
with first chapter devoted to scientifically valid concept of God and then explains
cosmic phenomena right from origin of nature and universe up to origin of life
and evolution of man. The book includes several chapters devoted to auxiliary
concepts and social sciences as corollaries to the concept of God. This is the only
book which deals with origin of nature and universe from null or Zero or nothing.
Chapter 30 of the book is about Evolution of Life wherein author has worked out
a new theory about evolution of life.
Visit:http:// www.sciencengod.com
http://curatio.in