For Darwin Day, 6 facts about the evolution debate

For Darwin Day, 6 facts about the evolution debate

When it comes to the heated subject of differences between how men and women behave, debate in psychology has centered on mate preferences and general interests. The available research shows that when it comes to heterosexual mating preferences, men are relatively more interested in physical beauty, while women are relatively more interested in earning capacity. As for general interests, men are more interested in physical things, while women are more interested in people. Even the staunchest evolutionary psychologists would acknowledge these are partially overlapping bell curves: There are plenty of men who are fascinated by other people, and plenty of women looking for physical beauty in a partner above all else. Yet the findings have been met with fierce resistance in some quarters. At the Nature end, on the other hand, are various evolutionary psychology accounts which posit that sex differences in behavior were carved into place by evolution. One of the most noteworthy studies published in support of social roles theory came out in American Psychologist in Alice H.

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Don’t have an account? This chapter examines close social relationships from an evolutionary perspective. Drawing on evidence from social psychology, evolutionary theory, ethology, anthropology, and sociology, it analyses some of the central features of close social relationships, with emphasis on their function, their number and quality, and their maintenance. Three different types of social bonds are discussed: mateships, kinship bonds, and friendships.

The rejection of evolution by religious groups involves an ongoing, recurring cultural, political, It was not officially opposed to evolution theory, but its main founder James Reddie objected to Darwin’s work as Much of creation geology is devoted to debunking the dating methods used in anthropology, geology, and​.

This page has been archived and is no longer updated. Since its proposal in the s, the molecular clock has become an essential tool in many areas of evolutionary biology, including systematics, molecular ecology, and conservation genetics. The molecular clock hypothesis states that DNA and protein sequences evolve at a rate that is relatively constant over time and among different organisms.

A direct consequence of this constancy is that the genetic difference between any two species is proportional to the time since these species last shared a common ancestor. Therefore, if the molecular clock hypothesis holds true, this hypothesis serves as an extremely useful method for estimating evolutionary timescales. This is of particular value when studying organisms that have left few traces of their biological history in the fossil record, such as flatworms and viruses.

The molecular clock hypothesis was originally proposed by researchers Emile Zuckerkandl and Linus Pauling on the basis of empirical observations, but it soon received theoretical backing when biologist Motoo Kimura developed the neutral theory of molecular evolution in Kimura suggested that a large fraction of new mutations do not have an effect on evolutionary fitness , so natural selection would neither favor nor disfavor them.

Eventually, each of these neutral mutations would either spread throughout a population and become fixed in all of its members, or they would be lost entirely in a stochastic process called genetic drift. Kimura then showed that the rate at which neutral mutations become fixed in a population known as the substitution rate is equivalent to the rate of appearance of new mutations in each member of the population the mutation rate. Provided that the mutation rate is consistent across species, the substitution rate would remain constant throughout the tree of life.

Subsequent research has shown that Kimura’s assumption of a strict molecular clock is too simplistic, because rates of molecular evolution can vary significantly among organisms. However, there has been a general reluctance to abandon the molecular clock entirely, because it represents such a valuable tool in evolutionary studies. Instead, researchers have undertaken efforts to retain some aspects of the original clock hypothesis while “relaxing” the assumption of a strictly constant rate.

Biology: BIOL3601/4601 (Evolution and Evolutionary Theory)

The theory of evolution by natural selection, first formulated in Darwin’s book “On the Origin of Species” in , is the process by which organisms change over time as a result of changes in heritable physical or behavioral traits. Changes that allow an organism to better adapt to its environment will help it survive and have more offspring.

Evolution by natural selection is one of the best substantiated theories in the history of science, supported by evidence from a wide variety of scientific disciplines, including paleontology, geology, genetics and developmental biology.

‘Living Fossil’ May Upend Basic Tenet of Evolutionary Theory maybe as long as million years — past its predicted expiration date.

Scientists have proved one of Charles Darwin’s theories of evolution for the first time — nearly years after his death. Laura van Holstein, a PhD student in Biological Anthropology at St John’s College, University of Cambridge, and lead author of the research published today March 18 in Proceedings of the Royal Society , discovered mammal subspecies play a more important role in evolution than previously thought. Her research could now be used to predict which species conservationists should focus on protecting to stop them becoming endangered or extinct.

A species is a group of animals that can interbreed freely amongst themselves. Some species contain subspecies — populations within a species that differ from each other by having different physical traits and their own breeding ranges. Northern giraffes have three subspecies that usually live in different locations to each other and red foxes have the most subspecies — 45 known varieties — spread all over the world. Humans have no subspecies.

Close Social Relationships

Her job involves incorporating theory and academic research into customer analysis, building a conceptual framework for insights into online consumer behavior. The counter-intuitive truth is that Tinder actually provides users with all the information they need to make an informed first impression about a potential long-term mate. And it does so by matching our human evolutionary mechanism.

From an evolutionary perspective, human relationships are shaped by multiple cognitive and affective Online Publication Date: Aug Keywords: life history theory, evolution, modularity, sexual selection, differential parental investment.

Over the last 25 years, a large amount of research has been dedicated to identifying men’s preferences for women’s physical features, and the evolutionary benefits associated with such preferences. Today, this area of research generates substantial controversy and criticism. I argue that part of the crisis is due to inaccuracies in the evolutionary hypotheses used in the field. For this review, I focus on the extensive literature regarding men’s adaptive preferences for women’s waist-to-hip ratio WHR , which has become a classic example of the just-so storytelling contributing to the general mistrust toward evolutionary explanations of human behavior.

The issues in this literature originate in the vagueness and incompleteness of the theorizing of the evolutionary mechanisms leading to mate preferences. Authors seem to have rushed into testing and debating the effects of WHR on women’s attractiveness under various conditions and using different stimuli, without first establishing a clear definitions of the central evolution concepts e. Unsound theoretical foundations will lead to imprecise predictions which cannot properly be tested, thus ultimately resulting in the premature rejection of an evolutionary explanation to human mate preferences.

This paper provides the first comprehensive review of the existing hypotheses on why men’s preferences for a certain WHR in women might be adaptive, as well as an analysis of the theoretical credibility of these hypotheses. By dissecting the evolutionary reasoning behind each hypothesis, I show which hypotheses are plausible and which are unfit to account for men’s preferences for female WHR. Moreover, the most cited hypotheses e. Finally, I suggest some directions for future studies on human mate choice, to move this evolutionary psychology literature toward a stronger theoretical foundation.

The ratio between the waist and the hips circumferences Waist-to-Hip Ratio, or WHR is a physical characteristic often used as an example to show that evolution shaped human mate preferences. It is also an example of just-so storytelling in evolutionary psychology. In , Devendra Singh suggested that WHR represents a strong predictor of women’s physical attractiveness Singh, a.

Dating of the human-ape splitting by a molecular clock of mitochondrial DNA

He devoted his youth to his work and in his 30s decided to marry his cousin. Instead, the piece is about sex differences and a batch of newer studies suggesting men and women are more alike than scientists had assumed — especially when it comes to promiscuity and pickiness. This should have been a great story. But the author, Dan Slater, tries to turn these sex difference studies into an attempted debunking of evolutionary psychology. The piece not only fails to make a compelling case but gives only a superficial treatment of the science presented.

In , after years of scientific investigation, Darwin publicly introduced his revolutionary theory of evolution in a letter read at a meeting of the Linnean Society.

The Structure of Evolutionary Theory is Harvard paleontologist Stephen Jay Gould ‘s technical book on macroevolution and the historical development of evolutionary theory. The first is a historical study of classical evolutionary thought, drawing extensively upon primary documents; the second is a constructive critique of the modern synthesis , and presents a case for an interpretation of biological evolution based largely on hierarchical selection , and the theory of punctuated equilibrium developed by Niles Eldredge and Gould in Gould described these three propositions as the “tripod” of Darwinian central logic, each being so essential to the structure that if any branch were cut it would either kill, revise, or superficially refurbish the whole structure—depending on the severity of the cut.

According to Gould “substantial changes, introduced during the last half of the 20th century, have built a structure so expanded beyond the original Darwinian core, and so enlarged by new principles of macroevolutionary explanation, that the full exposition, while remaining within the domain of Darwinian logic , must be construed as basically different from the canonical theory of natural selection, rather than simply extended.

In the arena of agency , Gould explores the concept of “hierarchy” in the action of evolution the idea that evolution may act on more than one unit simultaneously, as opposed to only acting upon individual organisms. In the arena of efficacy he explores the forces beside natural selection that have been considered in evolutionary theory. In the arena of scope he considers the relevance of natural selection to the larger scale patterns of life.

Gould was motivated to write the book by contrasting the opinions of Darwin and Hugh Falconer about the future of Darwinism. Chapter one introduces and outlines the Structure of Evolutionary Theory , with chapter two covering the structure of The Origin of Species , chapter three focusing on issues surrounding agency , chapters four and five covering efficacy , and chapters six and seven covering scope. Part II—comprising the bulk of the text—focuses on the modern discussion and debate post

Rejection of evolution by religious groups

From an evolutionary perspective, human relationships are shaped by multiple cognitive and affective mechanisms designed to solve long-recurring problems and opportunities faced by our ancestors. Different relationships—romantic, parental, friendship, acquaintanceship—differ in the threats and opportunities they afford. Because of this, the psychologies governing how people feel and think about different relationships differ profoundly as well: The psychology governing the feelings and thoughts people have about romantic partners is qualitatively different from the psychology governing feelings and thoughts about children, which is qualitatively different from the psychologies governing feelings and thoughts about friends, coworkers, and strangers.

In this chapter, we review principles underlying an evolutionary psychology of relationships, and then focus on how fundamental social goals—self-protection, disease avoidance, affiliation, status, mate acquisition, mate retention, and kin care—shape how people think about, feel about, and engage in the wide range of relationships characterizing human social life.

Keywords: life history theory , evolution , modularity , sexual selection , differential parental investment. Access to the complete content on Oxford Handbooks Online requires a subscription or purchase.

Jealous Couple Dating Love – Shutterstock. (Credit: Roman In theory, going after men who are taken has its benefits. Biologists predict mate.

Paleontologists have recovered and studied the fossil remains of many thousands of organisms that lived in the past. This fossil record shows that many kinds of extinct organisms were very different in form from any now living. It also shows successions of organisms through time see faunal succession, law of ; geochronology: Determining the relationships of fossils with rock strata , manifesting their transition from one form to another.

When an organism dies, it is usually destroyed by other forms of life and by weathering processes. On rare occasions some body parts—particularly hard ones such as shells, teeth, or bones—are preserved by being buried in mud or protected in some other way from predators and weather. Eventually, they may become petrified and preserved indefinitely with the rocks in which they are embedded. Methods such as radiometric dating —measuring the amounts of natural radioactive atoms that remain in certain minerals to determine the elapsed time since they were constituted—make it possible to estimate the time period when the rocks, and the fossils associated with them, were formed.

Radiometric dating indicates that Earth was formed about 4. The earliest fossils resemble microorganisms such as bacteria and cyanobacteria blue-green algae ; the oldest of these fossils appear in rocks 3.

Tinder and evolutionary psychology: The science behind what men and women swipe for, and why

Charles Robert Darwin was a British naturalist and biologist known for his theory of evolution and his understanding of the process of natural selection. In , he embarked on a five-year voyage around the world on the HMS Beagle , during which time his studies of various plants and an led him to formulate his theories. Charles Darwin was born on February 12, , in the tiny merchant town of Shrewsbury, England.

If we apply the evolutionary theory to the way people use Tinder, we find that While online dating has been around for as long as the internet.

If we apply the evolutionary theory to the way people use Tinder, we find that differences emerge because the traits that are sought by men and women are quite different, especially in short-term relationships. If Shakespeare were alive right now, he would definitely approve of Tinder. He would definitely have a thing or two to say about young people using Tinder for fun. In the s, 40 percent of couples in the US met through friends, and about 20 percent met in bars, in , 10 percent had met their partners on the internet, and by about 25 percent had.

Between and , more than one-third of couples who got married in the US met through online dating sites. Online dating is also picking up in urban India, with a majority preferring it over other means to find partners. India is expected to be one of the fastest growing markets for online dating apps like Tinder, which launched in India in Most of them preferred using dating sites to find their partners in private, over other means like matrimonial websites, which may be used by parents.

Many of its users look for short-term, casual, transient relationships as opposed to long-term, monogamous relationships. Concerns about safety and other disquieting incidents notwithstanding, we can apply the lens of evolutionary theory to understand this.

Was Darwin Wrong about Dating or Was the New York Times Wrong About Evolutionary Psychology?

Charles Darwin is more famous than his contemporary Alfred Russel Wallace who also developed the theory of evolution by natural selection. Ideas aimed at explaining how organisms change, or evolve, over time date back to Anaximander of Miletus, a Greek philosopher who lived in the s B. Noting that human babies are born helpless, Anaximander speculated that humans must have descended from some other type of creature whose young could survive without any help.

Evolutionary approaches state that animals to go on a date, to go back to their apartment.

Scientists have discovered a wealth of evidence concerning human evolution , and this evidence comes in many forms. Thousands of human fossils enable researchers and students to study the changes that occurred in brain and body size, locomotion, diet, and other aspects regarding the way of life of early human species over the past 6 million years.

Millions of stone tools, figurines and paintings, footprints, and other traces of human behavior in the prehistoric record tell about where and how early humans lived and when certain technological innovations were invented. Study of human genetics show how closely related we are to other primates — in fact, how connected we are with all other organisms — and can indicate the prehistoric migrations of our species, Homo sapiens , all over the world.

Advances in the dating of fossils and artifacts help determine the age of those remains, which contributes to the big picture of when different milestones in becoming human evolved. Exciting scientific discoveries continually add to the broader and deeper public knowledge of human evolution. Explore the evidence of early human behavior—from ancient footprints to stone tools and the earliest symbols and art — along with similarities and differences in the behavior of other primate species.

Evolution: It’s a Thing – Crash Course Biology #20


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