Darwinism versus variations in koala bear

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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 …

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

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  • 1. Darwinism versus Variations in Koala BearSummary: 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 nativeto 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 alsoextend for considerable distances inland in regions with enough moisture tosupport suitable woodlands.Koalas have been divided into three subspecies and as a matter of rule individualsfrom southern cooler climates are larger.VARIATIONS A typical Victorian koala (formerly P. cinereus victor) has longer, thicker fur; is adarker, softer grey, often with chocolate-brown highlights on the back andforearms; and has a more prominently light-colored ventral side and fluffy whiteear tufts. Typical and New South Wales koala weights are 12 kg (26 lb) for malesand 8.5 kg (19 lb) for females. The other extreme are Koalas in tropical and sub-tropical Queensland. InQueensland the koala is smaller (at around 6.5 kg (14 lb) for an average male andjust over 5 kg (11 lb) for an average female); a lighter often rather scruffy grey incolour; and has shorter, thinner fur. In Queensland, the koala was previouslyclassified 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 melaninpigment that produces albinism in most other mammalian species.The variation from one form to another is continuous. There are substantialdifferences 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 Australiadating 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, giantkoalas inhabited the southern regions of Australia. The koala fills the sameecological role as the sloths of South America. Koala lives almost entirely on Eucalyptus leaves. It has firm preferences forparticular varieties of eucalypt and these preferences vary from one region toanother: in the south Manna Gum, Tasmanian Blue Gum, and Swamp Gum arefavoured; Grey Gum and Tallowwood are important in the north, and theubiquitous River Red Gum of the isolated seasonal swamps and watercourses thatmeander across the dry inland plains allows the koala to live insurprisingly arid areas. Many factors determine which of the 680 species ofeucalypt trees the koala eats.DISCUSSIONFrom the above account of geography related variations in Koala size; fur color,length and texture; preference for different species of Eucalyptus trees indifferent regions it is obvious that 20 million years of existence of Koala inAustralia have been insufficient to eliminate those variations. This is true despitethere being no isolation and ample opportunities for dispersal and migration.These observations are in accordance with conclusions of J.C. Willis thatdispersibility as an aid to invasion of unoccupied grounds is rarely significant forthe purpose of evolution and the most cosmopolitan genera lacked suchdispersion adaptations.Darwinism says that evolution advances by accumulation of selected randomvariations and species come into being by dispersion of ancestral species followedby isolation of various populations followed by evolution of different populationsinto individual species by further accumulation of variations along divergent linesultimately 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 inAustralian Koala. Therefore Darwinism is not the final word about mechanism ofevolution. Author: Dr Mahesh C. Jain is a practicing medical doctor and has written thebook “Encounter of Science with Philosophy – A synthetic view”. The book beginswith first chapter devoted to scientifically valid concept of God and then explainscosmic phenomena right from origin of nature and universe up to origin of lifeand evolution of man. The book includes several chapters devoted to auxiliaryconcepts and social sciences as corollaries to the concept of God. This is the onlybook 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 outa new theory about evolution of life.Visit:http:// www.sciencengod.com http://curatio.in