Using the measurements given for the following human evolution groups, please ex
ID: 257502 • Letter: U
Question
Using the measurements given for the following human evolution groups, please explain using the evidenc eif human evolution followed a pattern of anagenesis or cladogenesis?
Face Proj. Cran. Proj Size (cc) For Mag (96) Face Width Species 2.5 1.9 2 2.8 2.1 3.8 3.9 2.6 9.1 0.04 749 792 676 915 915 913 1266 646 1215 5.3 7.6 6.3 54.6 48.4 37.5 72.5 61.5 80.7 80.3 62.7 83.9 57.2 78.1 79.2 Australopithecus afarensis Australopithecus africanus 78.4 72.1 68.8 70.1 66.3 69.3 59.5 91.2 Paranthropus bosei Homo ergaster Homo erectus Homo heidelburgensis 3.6 5.3 3.2 3.2 1.7 6.1 Homo neanderthalensis Homo floresiensis Cro-Magnon Chimpanzee 838Explanation / Answer
Anagenesis and Cladogenesis are two path of speciation.It plays major part in the evolution of species and undergo varaiation and diversions fprming new improved organism according to the habitat and habits.
Anagenesis-In this pattern of evolution,a particular species undergo periodic changes and results in the formation of improved species which doesn't match with the species which was in the origin.There is no diversion of the ancestral species into more than one new species.It happense rarely in the ecology.
eg.Evolution of giraffe.
Cladogenesis-An ancestral species is evolved by branching into more than two new species.Certain similarities are vishualized in phenotypic and genotypic level.Then the evolved species act as separate species but survive like neighbores.This happened frequently in the ecosystem.Sometimes various barriors like geographical or sudden muataion cause the novel organism to stop mating from older one.
eg.Indian and african elephants,Human and chimps,Darvin finches
As per the given details on percentage of mag,facial width,cranial projection,face projection and size of various human ancesters and chimoanzees I could say that the human evolution is from chimps .Cladogenesis pattern of evolution is the reason for the separation of the single species to varieties if other improved apes now called humans.Human had been through number of changes in genetic as well as somatic level.After generations of evolution in gene cause irreversible muataion resultes in formation of one new organism.The two pattern of species formed from cladogenesis are Chimpanzees and hominides.
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