Science education, however, starts much later and evolutionary biology, with a strong focus on Darwin's life and work, is taught only briefly in high school classes.
The findings described later, and evolutionary considerations, suggest brain-derived neurotrophic factor (BDNF) plays a critical role in the integration and optimization of behavioral and metabolic responses to environments with limited energy resources and intense competition.
The metaphor of an adaptive landscape with adaptive peaks of high fitness, separated by adaptive valleys of low fitness attracted a lot of interest from contemporary and later evolutionary biologists and inspired research in paleontology, genetics, ecology, evolutionary developmental biology and speciation, but has also generated considerable controversy.
In summary, EFhd2 is the ancestral protein, being present for instance in worms and insects, and EFhd2 and EFhd1 co-exist from the euteleostomic lineage on, for instance in zebrafish, frog and later evolutionary stages.
Gould also had a long-running public feud with E. O. Wilson and other evolutionary biologists about human sociobiology and its later descendant evolutionary psychology (which Gould and Lewontin opposed, but, which Richard Dawkins, Maynard Smith, Daniel Dennett, and Steven Pinker advocated).
In this context, we propose the hypothesis of an vertebrate ancestral morphogenesis regulation system with independency between the pro-proliferation and anti-proliferation signals (as in thelodonts and sharks) explaining the ability to grow single-axis and bent-axis structures, and a later evolutionary event leading to the enamel knot system in the lineage leading to extant mammals (Fig. 9).
Two decades ago, evolutionary biologists Stephen Jay Gould and Elisabeth Vrba coined a new term, "exaptation," to denote a trait that had evolved for one purpose and then later in evolutionary history was co-opted for another.
The morphology of A. afarensis is a mosaic of primitive features and evolutionary developments shared by later hominins.
In response, supporters of evolution have argued that no scientist's claims, including Darwin's, are treated as sacrosanct, as shown by the aspects of Darwin's theory that have been rejected or revised by scientists over the years, to form first Neo-Darwinism and later the modern evolutionary synthesis.
Later, tight evolutionary bonds developed between ants and plants.
The splitting of ancestral linear mt chromosomes as in H. magnipapillata (and possibly Cubozoa) happened much later in evolutionary history, contradicting the view that the two or more linear mt chromosomes in Medusozoa directly originated from one circular DNA molecule.
