Getting Beyond the Apemen

2021 ◽  
pp. 1-18
Author(s):  
Lesley Newson ◽  
Peter J. Richerson
Keyword(s):  
At Risk ◽  
Natural Selection ◽  
Human Evolution ◽  
Evolutionary Process ◽  
Adult Males ◽  
Evolutionary Processes ◽  
Complex Information ◽  
History Of ◽  
Evolution By Natural Selection

This introductory chapter explains why a new story of human evolution is needed, and also lays the foundations of the story told in this book. One of the reasons we need a new story is that previous stories have concentrated on what our male ancestors were doing. Since survival is most at risk in the first years of life, it makes much more sense to concentrate on children and their mothers than on adult males. A brief account of the history of ideas in evolution by natural selection and human evolution provides readers with a background in evolutionary processes. Humans are a product of evolution, but we are not like other animals, because we are connected and readily share complex information. We are unique and our evolution was the result of a unique evolutionary process. To understand ourselves in evolutionary terms, it’s necessary to consider two intertwined evolutionary processes—genes and culture.

‘Hurrah for the missing link!’: a history of apes, ancestors and a crucial piece of evidence

2011 ◽  
Vol 65 (1) ◽  
pp. 83-98 ◽  
Author(s):  
Peter C. Kjærgaard
Keyword(s):  
Nineteenth Century ◽  
Natural Selection ◽  
Human Evolution ◽  
Fossil Record ◽  
Animal Kingdom ◽  
Missing Link ◽  
Origin Of Species ◽  
Theory Of Evolution ◽  
History Of ◽  
Evolution By Natural Selection

In the nineteenth century the idea of a ‘missing link’ connecting humans with the rest of the animal kingdom was eagerly embraced by professional scientists and popularizers. After the publication of Charles Darwin's Origin of Species in 1859, many tied the idea and subsequent search for a crucial piece of evidence to Darwin and his formulation of the theory of evolution by natural selection. This article demonstrates that the expression was widely used and that the framework for discussions about human's relation to the apes and gaps in the fossil record were well in place and widely debated long before Origin of Species became the standard reference for discussing human evolution. In the second half of the century the missing link gradually became the ultimate prize in palaeoanthropology and grew into one of the most powerful, celebrated and criticized icons of human evolution.

scholarly journals Selecting among Alternative Scenarios of Human Evolution by Simulated Genetic Gradients

Genes ◽  
2018 ◽  
Vol 9 (10) ◽  
pp. 506 ◽  
Author(s):  
Catarina Branco ◽  
Miguel Arenas
Keyword(s):  
Human Evolution ◽  
Simulated Data ◽  
Real Data ◽  
Population Admixture ◽  
Evolutionary Processes ◽  
Long Distance ◽  
History Of ◽  
Pros And Cons ◽  
Alternative Scenarios ◽  
And Migration

Selecting among alternative scenarios of human evolution is nowadays a common methodology to investigate the history of our species. This strategy is usually based on computer simulations of genetic data under different evolutionary scenarios, followed by a fitting of the simulated data with the real data. A recent trend in the investigation of ancestral evolutionary processes of modern humans is the application of genetic gradients as a measure of fitting, since evolutionary processes such as range expansions, range contractions, and population admixture (among others) can lead to different genetic gradients. In addition, this strategy allows the analysis of the genetic causes of the observed genetic gradients. Here, we review recent findings on the selection among alternative scenarios of human evolution based on simulated genetic gradients, including pros and cons. First, we describe common methodologies to simulate genetic gradients and apply them to select among alternative scenarios of human evolution. Next, we review previous studies on the influence of range expansions, population admixture, last glacial period, and migration with long-distance dispersal on genetic gradients for some regions of the world. Finally, we discuss this analytical approach, including technical limitations, required improvements, and advice. Although here we focus on human evolution, this approach could be extended to study other species.

An Evolutionary Approach to Synthetic Biology: Zen and the Art of Creating Life

1993 ◽  
Vol 1 (1_2) ◽  
pp. 179-209 ◽  
Author(s):  
Thomas S. Ray
Keyword(s):  
Natural Selection ◽  
Synthetic Biology ◽  
Evolutionary Biology ◽  
Evolutionary Process ◽  
Life Forms ◽  
Evolutionary Approach ◽  
Artificial Medium ◽  
Natural Form ◽  
Evolution By Natural Selection ◽  
Physical Laws

Our concepts of biology, evolution, and complexity are constrained by having observed only a single instance of life, life on earth. A truly comparative biology is needed to extend these concepts. Because we cannot observe life on other planets, we are left with the alternative of creating Artificial Life forms on earth. I will discuss the approach of inoculating evolution by natural selection into the medium of the digital computer. This is not a physical/chemical medium; it is a logical/informational medium. Thus, these new instances of evolution are not subject to the same physical laws as organic evolution (e.g., the laws of thermodynamics) and exist in what amounts to another universe, governed by the “physical laws” of the logic of the computer. This exercise gives us a broader perspective on what evolution is and what it does. An evolutionary approach to synthetic biology consists of inoculating the process of evolution by natural selection into an artificial medium. Evolution is then allowed to find the natural forms of living organisms in the artificial medium. These are not models of life, but independent instances of life. This essay is intended to communicate a way of thinking about synthetic biology that leads to a particular approach: to understand and respect the natural form of the artificial medium, to facilitate the process of evolution in generating forms that are adapted to the medium, and to let evolution find forms and processes that naturally exploit the possibilities inherent in the medium. Examples are cited of synthetic biology embedded in the computational medium, where in addition to being an exercise in experimental comparative evolutionary biology, it is also a possible means of harnessing the evolutionary process for the production of complex computer software.

A Genealogy of Variation

2017 ◽  
Keyword(s):  
Natural Selection ◽  
Charles Darwin ◽  
History Of ◽  
Evolution By Natural Selection

This chapter traces the genealogy of variation, as shaped by Charles Darwin and his legacy of evolution by natural selection. It argues that tracing the history of variation through a naturecultural framework reveals the inherent underlying logic of eugenics. A naturecultural framework allows us to see that evolutionary biologists have long wrestled with some version of what we recognize as the nature/nurture debates. Furthermore, in chronicling this history, the chapter deals with the major figures, including the four patriarchs, or fathers, of the field: Darwin, the father of evolution; Galton, the father of biometry; Malthus, the father of demography; and Mendel, the father of genetics.

Brain evolution by natural selection

2006 ◽  
Vol 29 (1) ◽  
pp. 23-24 ◽  
Author(s):  
Toru Shimizu
Keyword(s):  
Natural Selection ◽  
Brain Evolution ◽  
Evolutionary Processes ◽  
Evolution By Natural Selection

Principles of Brain Evolution (Striedter 2005) places little emphasis on natural selection. However, one cannot fully appreciate the diversity of brains across species, nor the evolutionary processes driving such diversity, without an understanding of the effects of natural selection. Had Striedter included more extensive discussions about natural selection, his text would have been more balanced and comprehensive.

Considering the Role and Nature of the Scientist

2015 ◽  
Vol 77 (2) ◽  
pp. 94-98 ◽  
Author(s):  
Serap Öz Aydın
Keyword(s):  
Natural Selection ◽  
History Of Science ◽  
Theory Of Evolution ◽  
Negative Thoughts ◽  
Science Approach ◽  
History Of ◽  
Evolution By Natural Selection ◽  
Scientific Framework

For many students, preconceived notions about Darwin are among the most significant obstacles in learning about the theory of evolution by natural selection. I present an activity designed to eliminate this obstacle and encourage empathizing with Darwin, utilizing the history-of-science approach. Through the activity, students’ negative thoughts about Darwin disappeared, Darwin’s position as a scientist came to the fore, students’ interest in evolution increased, and they started to discuss the theory within a scientific framework.

scholarly journals Different Stages of Evolution of Humankind

2017 ◽  
pp. 46-77
Author(s):  
Slaven Jozic
Keyword(s):  
Human Evolution ◽  
Homo Sapiens ◽  
Evolutionary Process ◽  
Great Apes ◽  
Distinct Species ◽  
Scientific Disciplines ◽  
Late Cretaceous Period ◽  
Anatomically Modern Humans ◽  
Gradual Development ◽  
History Of

Human evolution is the evolutionary process that led to the emergence of anatomically modern humans, beginning with the evolutionary history of primates—in particular genus Homo—and leading to the emergence of Homo sapiens as a distinct species of the hominid family, the great apes. This process involved the gradual development of traits such as human bipedalism and language, as well as interbreeding with other hominines, which indicate that human evolution was not linear but a web. The study of human evolution involves several scientific disciplines, including physical anthropology, primatology, archaeology, paleontology, neurobiology, ethology, linguistics, evolutionary psychology, embryology and genetics. Genetic studies show that primates diverged from other mammals about 85 million years ago, in the Late Cretaceous period, and the earliest fossils appear in the Paleocene, around 55 million years ago. Within the Hominoidea (apes) superfamily, the Hominidae family diverged from the Hylobatidae (gibbon) family some 15–20 million years ago; African great apes (subfamily Homininae) diverged from orangutans (Ponginae) about 14 million years ago; the Hominini tribe (humans, Australopithecines and other extinct biped genera, and chimpanzee) parted from the Gorillini tribe (gorillas) between 8–9 million years ago; and, in turn, the subtribes Hominina (humans and biped ancestors) and Panina (chimps) separated 4–7.5 million years ago.

Evolution of birds

2020 ◽  
pp. 1-20
Author(s):  
Graham Scott
Keyword(s):  
Natural Selection ◽  
Evolutionary History ◽  
Scientific Literature ◽  
Evolutionary Adaptation ◽  
Conservation Implications ◽  
Modern Bird ◽  
History Of ◽  
Evolution Of Birds ◽  
Evolution By Natural Selection

This chapter explores the evolutionary history of birds. It considers the dinosaur origins of birds and the evolution of the modern bird lineages. The development of the modern bird from its prehistoric, reptilian ancestors is analysed by discussion of important fossil specimens, particularly that of Archaeopteryx, and the development of both morphological and biomolecular phylogenies. Evolution by natural selection is explained, as are processes of evolutionary adaptation and speciation. The conservation implications of hybridization are considered and the classification and nomenclature of birds is introduced. Throughout the chapter examples of current research are presented alongside established classic studies to engage the reader and provide a route into the relevant scientific literature.

Pattern and process in paleobiology: the role of cladistic analysis in systematic paleontology

Paleobiology ◽  
1981 ◽  
Vol 7 (4) ◽  
pp. 456-468 ◽  
Author(s):  
Joel Cracraft
Keyword(s):  
Natural Selection ◽  
Phylogenetic Reconstruction ◽  
Cladistic Analysis ◽  
Evolutionary Process ◽  
Taxonomic Diversity ◽  
Logical Structure ◽  
Ecological Processes ◽  
Systematic Paleontology ◽  
History Of ◽  
Natural Groups

Systematics and paleontology have had a long conceptual relationship, united by the common goal of reconstructing the history of life. Yet, with few exceptions, paleontologists have had little input into formulating systematic theory and methodology. The reasons for this apparently relate to two conceptual-philosophical traditions of post-Darwinian paleontology: (1) the widespread adoption of a species concept in which taxa are viewed as nondiscrete, arbitrarily designated segments of evolutionary continua, and (2) the belief that phylogenetic reconstruction is primarily an empirical matter of tracing evolutionary change through the stratigraphic record.Available systematic evidence supports the hypothesis that species are real, discrete units in space and time and that, unless they are postulated to be directly ancestral to another species, they can be defined by the possession of one or more evolutionary novelties (derived characters). Species beginnings are delineated by speciation (vicariance) events and their terminations by subsequent speciation events or by extinctions.Natural groups are composed of taxa that have shared a common genealogical history. Cladistic analysis is a method to construct and test hypotheses of monophyly and thereby define natural groups. Cladistic hypotheses are necessary to investigate many of the major questions within contemporary paleobiology. Virtually no studies of evolutionary rates, patterns of taxonomic diversity, modes of taxic evolution, and patterns of morphological diversification can be undertaken without reference to cladistic hypotheses about the composition of natural groups.Because paleobiology is historical in its content, paleontologists are greatly limited in their ability to use paleontological data to investigate questions about the evolutionary process. According to current evolutionary theory, the concepts of adaptation and natural selection relate to genetic and ecological processes that take place within local populations (microevolution). If so, then data relevant to examining these phenomena are likely to be lacking in paleontological samples. Consequently, explanations of paleontological pattern that include process-related concepts such as adaptation and natural selection are axiomatic in their logical structure and thus cannot be falsified or critically evaluated by that paleontological pattern.

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