Theories of apparently altruistic behavior were accelerated by the need to produce theories compatible with evolutionary origins.

The origins and evolutionary relationships between the three main groups of amphibians is a matter of debate.

Many hypotheses on the evolutionary origins of the universal genetic code have been proposed.

Gossip has been researched in terms of its evolutionary psychology origins.

Behe's claim that no scientific literature adequately modeled the origins of biochemical systems through evolutionary mechanisms has been challenged by TalkOrigins.

Current evidence does suggest possible evolutionary lineages for the origins of the anatomical features of the eye.

There are two main perspectives on the origins and basis of nationalism, one is the primordialist perspective that describes nationalism as a reflection of the ancient and perceived evolutionary tendency of humans to organize into distinct grouping based on an affinity of birth ; the other is the modernist perspective that describes nationalism as a recent phenomenon that requires the structural conditions of modern society.

The primordialist evolutionary view of nationalism has its origins in the evolutionary theories of Charles Darwin that were later substantially elaborated by John Tooby and Leda Cosmides.

Recently, there has been some controversy regarding the evolutionary origins of the giraffe's ( Giraffa camelopardalis ) neck.

The origins and evolutionary relationships between the three main groups of amphibians is hotly debated.

The evolutionary origins of chelicerates from the early arthropods have been debated for decades.

For many years after its discovery the evolutionary origins of Triceratops remained largely obscure.

Thus, the origins of evolutionary developmental biology come from both an improvement in molecular biology techniques as applied to development, and the full appreciation of the limitations of classic neo-Darwinism as applied to phenotypic evolution.

Mushroom bodies are structures in the brains of many types of worms and arthropods that are known to play important roles in learning and memory ; the genetic evidence indicates a common evolutionary origin, and therefore indicates that the origins of the earliest precursors of the cerebral cortex date back to the early Precambrian era.

This looked at how the same evolutionary mechanisms involved in speciation might be extended to explain the origins of the differences between the higher level taxa.

Both have different origins and evolutionary path, as the New York Salsa is heavily influenced by Jazz instruments in its early growth stage.

Short-distance passerine migrants have two evolutionary origins.

Spare also believed in what he called " atavistic resurgence ", the idea that the human mind contains atavistic memories that have their origins in earlier species on the evolutionary ladder.

' Erasmus Darwin, Herbert Spencer and the origins of the evolutionary worldview in British provincial scientific culture ', Isis 94 ( 2003 ), 1 – 29

First, two entirely different protein sequences from different evolutionary origins may fold into a similar structure.

The evolutionary origins of the embryophytes are discussed further below, but they are believed to have evolved from within a group of complex green algae during the Paleozoic era ( which started around ).

Human arts might have origins in early human evolutionary prehistory.

He has published numerous articles in organic chemistry, genetic engineering and patent law, and has made contributions to evolutionary theory concerning the origins of perception and cognition, and the origin of life.

The hygiene hypothesis has expanded from eczema and hay fever to include exposure to several varieties of microorganisms and parasites, with which humans coexisted throughout much of our evolutionary history, as necessary for balanced and regulated immune system development.

Early anthropology was divided between proponents of unilinealism, who argued that all societies passed through a single evolutionary process, from the most primitive to the most advanced, and various forms of non-lineal theorists, who tended to subscribe to ideas such as diffusionism.

* Cambrian explosion — the most famous evolutionary radiation

This accompanied or facilitated other important evolutionary developments: the bilaterian body plan ; the coelom, an internal cavity that provided space for a circulatory system and, in some animals, formed a hydrostatic skeleton which enables worm-like animals to burrow ; metamerism, in which the body was built of repeated " modules " which could later specialize, for example the heads of most arthropods are composed of fused, specialized segments.

Scientists currently think that cnidarians, ctenophores and bilaterians are more closely related to calcareous sponges than these are to other sponges, and that anthozoans are the evolutionary " aunts " or " sisters " of other cnidarians, and the most closely related to bilaterians.

Although Haeckel's ideas are important to the history of evolutionary theory, and he was a competent invertebrate anatomist most famous for his work on radiolaria, many speculative concepts that he championed are now considered incorrect.

The study of fossils across geological time, how they were formed, and the evolutionary relationships between taxa ( phylogeny ) are some of the most important functions of the science of paleontology.

It is a term coined by Stephen Jay Gould and Niles Eldredge to contrast with their model of punctuated equilibrium, which is gradualist itself, but argues that most evolution is marked by long periods of evolutionary stability ( called stasis ), which is punctuated by rare instances of branching evolution.

This connection between both physical and human properties of geography is most apparent in the theory of Environmental determinism, made popular in the 19th century by Carl Ritter and others, and with close links to evolutionary biology of the time.

These three groups were shown to be isolated and are considered to most likely be “ diverging on different evolutionary paths ".

In his evolutionary model of history, he argued that human history began with free, productive and creative work that was over time coerced and dehumanised, a trend most apparent under capitalism.

Kurt Schwenk, an evolutionary biologist at the University of Connecticut, finds the discovery of these glands intriguing, but considers most of the evidence for venom in the study to be " meaningless, irrelevant, incorrect or falsely misleading ".

Many of the features common to the most widely practiced religions provide built-in advantages in an evolutionary context, she writes.

Paleontology, evolutionary developmental biology, comparative genomics and genomic phylostratigraphy contribute most of the evidence for the patterns and processes that can be classified as macroevolution.

Few major biological types have emerged during the evolutionary history of life and most of them survive till today.

Although a complete theory of evolution also requires an account of how genetic variation arises in the first place ( such as by mutation and sexual reproduction ) and includes other evolutionary mechanisms ( such as genetic drift and gene flow ), natural selection appears to be the most important mechanism for creating complex adaptations in nature.

English philosopher Herbert Spencer was one of the most energetic promoters of evolutionary ideas to explain many phenomena.

Punctuated equilibrium ( also called punctuated equilibria form ) is a theory in evolutionary biology which proposes that most species will exhibit little net evolutionary change for most of their geological history, remaining in an extended state called stasis.

Mayr later complimented Eldredge and Gould's paper, stating that evolutionary stasis had been " unexpected by most evolutionary biologists " and that punctuated equilibrium " had a major impact on paleontology and evolutionary biology.

According to Gould " stasis may emerge as the theory's most important contribution to evolutionary science.