Abstract
This paper attempts to reconcile the conceptual conflict between typological and population thinking to provide a philosophical foundation for extended evolutionary synthesis (EES). Typological thinking has been considered a pre-Darwinian, essentialist dogma incompatible with population thinking, which is the core notion of Darwinism. More recent philosophical and historical studies suggest that a non-essentialist form of typology (i.e., representational typology) has some advantages in the study of evolutionary biology. However, even if we adopt such an epistemological interpretation of typological thinking, there still remains an epistemological and methodological conflict between these two styles of thinking. How can we relate typological thinking with population thinking in pursuit of more integrated or interconnected research into evolutionary biology? I propose that homology thinking, which is another style of thinking that recognizes homologous characters, provides a common basis for typological representations of character states and for character dynamics in an evolving population. Good examples of this bridging role are found in teratology and breeding, where variation and novelty are recognized in developmental and morphological traits, gene expression patterns, and so on. Essentialism-free, dynamic views of homology have great potential to reconcile typological and population thinking and to set the stage for the EES.
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Notes
Here “the gap is bridged” does not mean that the gap is completely filled or closed but that the two areas separated by the gap can be interrelated, although the gap remains.
Note that these “grounds” do not necessarily provide certain criteria for the identification of homologs. We can recognize homologs, even if neither their historical continuity nor developmental mechanism is clear. See Remane (1952) for the most prominent operational criteria of homology (summarized in Griffiths 2007, p. 648).
It is notable that Simpson (1944, p. 98) argued that “the paleontologist has more reason to believe in a qualitative distinction between macro-evolution and mega-evolution than in one between micro-evolution and macro-evolution.”.
For other problems of this theory in the context of homology, see Suzuki and Tanaka (2017).
The relationship and compatibility between PRM and causal model views is worthy of further discussion. As this issue strays from the main topic in the current paper, however, it is left for future work.
The processual philosophy of biology (Dupré and Nicholson 2018) is an ontological theory that has some affinity to a dynamic view of homology. According to the PRM view, for example, homologs are considered neither members of a natural kind nor parts of an individual but as subprocesses (each homolog) of a process (homologs as a whole) that exhibit coherence (modularity of each homolog) and persistence (persistent reproductivity of homologs). For a detailed discussion of coherence and persistence of biological processes, see DiFrisco (2018). Also, dispositionalism in the processual philosophy of biology might provide a better framework for understanding causation in biology, ontologically, and epistemically (Anjum and Mumford 2018).
References
Abe G, Lee SH, Chang M, Liu SC, Tsai HY, Ota KG (2014) The origin of the bifurcated axial skeletal system in the twin-tail goldfish. Nat Commun 5:3360
Alberch P (1985) Developmental constraints: why St. Bernards often have an extra digit and poodles never do. Am Nat 126:430–433
Alberch P, Gale EA (1983) Size dependence during the development of the amphibian foot. Cochicine-induced digital loss and reduction. J Embryol Exp Morphol 76:177–197
Alberch P, Gale EA (1985) A developmental analysis of an evolutionary trend: digital reduction in amphibians. Evolution 39:8–23
Amundson R (2005) The changing role of the embryo in evolutionary thought: roots of Evo-Devo. Cambridge Univ Press, Cambridge
Ankeny RA, Leonelli S (2011) What’s so special about model organisms? Stud Hist Philos Sci 42:313–323
Anjum RL, Mumford S (2018) Dispositionalism: a dynamic theory of causation. In: Nicholson DJ, Dupré J (eds) Everything flows: towards a processual philosophy of biology. Oxford Univ Press, Oxford, pp 61–75
Assis LCS, Brigandt I (2009) Homology: homeostatic property cluster kinds in systematics and evolution. Evol Biol 36:248–255
Axelrod HR (1988) Koi varieties: Japanese colored carp-Nishikigoi. TFH Publications, Neptune
Bonnett BN, Egenvall A, Olson P, Hedhammar A (1997) Mortality in insured Swedish dogs: rates and causes of death in various breeds. Vet Rec 141:40–44
Brigandt I (2007) Typology now: homology and developmental constraints explain ecolvability. Biol Philos 22:709–725
Brigandt I (2009) Natural kinds in evolution and systematics: metaphysical and epistemological considerations. Acta Biotheor 57:77–97
Brigandt I (2017) Typology and natural kinds in evo-devo. In: De La Rosa LN, Müller G (eds) Evolutionary developmental biology: a reference guide. Springer, Cham, pp 1–11
Churchill FB (1980) The modern evolutionary synthesis and the biogenetic law. In: Mayr E, Provine WB (eds) The evolutionary synthesis: perspectives on the unification of biology. Harvard Univ Press, Cambridge, pp 97–112
Chung C (2003) On the origin of the typological/population distinction in Ernst Mayr’s changing views of species, 1942–1959. Stud Hist Philos Sci C 34(2):277–296
Coleman W (1980) Morphology in the evolutionary synthesis. In: Mayr E, Provine WB (eds) The evolutionary synthesis: perspectives on the unification of biology. Harvard Univ Press, Cambridge, pp 174–180
Conway Morris S, Caron J-B (2014) A primitive fish from the Cambrian of North America. Nature 512(7515):419–422
Crick AP, Babbs C, Brown JM, Morriss-kay GM (2003) Developmental mechanisms underlying polydactyly in the mouse mutant doublefoot. J Anat 202(1):21–26
Darwin C (1859) On the origin of species by means of natural selection, or the preservation of favoured races in the struggle for life, 1st ed. J Murray, London
DiFrisco J (2018) Biological processes. In: Nicholson DJ, Dupré J (eds) Everything flows: towards a processual philosophy of biology. Oxford Univ Press, Oxford, pp 76–95
Dobzhansky T (1937) Genetics and the origin of species. Columbia University Press, New York
Dupré J, Nicholson DJ (2018) A manifesto for a processual philosophy of biology. In: Nicholson DJ, Dupré J (eds) Everything flows: towards a processual philosophy of biology. Oxford Univ Press, Oxford, pp 3–45
Eguchi G, Eguchi Y, Nakamura K, Yadav MC, Millán JL, Tonis PA (2011) Regenerative capacity in newts is not altered by repeated regeneration and ageing. Nat Commun 2:384
Ereshefsky M (2007) Foundational issues concerning taxa and taxon names. Syst Biol 56:295–301
Ereshefsky M (2009) Homology: integrating phylogeny and development. Biol Theor 4:225–229
Ereshefsky M (2010a) Species. In: Zalta EN (ed) The Stanford encyclopedia of philosophy (Spring 2010 edition). http://plato.stan-ford.edu/archives/spr2010/entries/species/
Ereshefsky M (2010) What’s wrong with the new biological essentialism. Philos Sci 77:674–685
Ereshefsky M (2012) Homology thinking. Biol Philos 27:381–400
Fabrezi M (2001) A survey of prepollex and prehallux variation in anuran limbs. Zool J Linnean Soc 131:227–248
Farrugia MC, Calleja-Agius J (2016) Polydactyly: a review. Neonatal Netw 35(3):135–142
Futuyma D (1998) Evolutionary biology, 3rd ed. Sinauer Associates, Sunderland
Galis F, van Alphen J, Metz J (2001) Why five fingers? evolutionary constraints on digit numbers. Trends Ecol Evol 16(11):637–646
Gayon J (1998) Darwinism’s struggle for survival: heredity and the hypothesis of natural selection. Cambridge Univ Press, Cambridge
Ghiselin MT (1980) The failure of morphology to assimilate Darwinism. In: Mayr E, Provine WB (eds) The evolutionary synthesis: perspectives on the unification of biology. Harvard Univ Press, Cambridge, pp 180–193
Ghiselin MT (2005) Homology as a relation of correspondence between parts of individuals. Theor Biosci 124:91–103
Ghiselin MT (2006) The failure of morphology to contribute to the modern synthesis. Theor Biosci 124(3–4):309–316
Grant PR, Grant BR (2002) Unpredictable evolution in a 30-year study of Darwin’s finches. Science 296(5568):707–711
Griffiths PE (2007) The phenomena of homology. Biol Philos 22:643–658
Guinard G (2012) Evolutionary concepts meet the neck of penguins (Aves: Sphenisciformes), towards a “survival strategy” for evo-devo. Theory Biosci 131(4):231–242
Guinard G (2015) Introduction to evolutionary teratology, with the example of forelimbs of Tyrannosauridae and Carnotaurinae (Dinosauria: Theropoda). Evol Biol 42:20–41
Haag ES, True JR (2018) Developmental system drift. In: de la Rosa LN, Müller G (eds) Evolutionary developmental biology. Springer, Cham
Hamburger V (1980) Embryology and the modern synthesis in evolutionary theory. In: Mayr E, Provine WB (eds) The evolutionary synthesis: perspectives on the unification of biology. Harvard Univ Press, Cambridge, pp 97–112
Hayashi S, Kobayashi T, Yano T, Kamiyama N, Egawa S, Seki R, Takizawa K, Okabe M, Yokoyama H, Tamura K (2015) Evidence for an amphibian sixth digit. Zool Lett 1:17
Kropatsch R, Melis C, Stronen AV, Jensen H, Epplen JT (2015) Molecular genetics of sex identification, breed ancestry and polydactyly in the Norwegian Lundehund breed. J Hered 106(4):403–406
Laland KN, Uller T, Feldman MW, Sterelny K, Müller GB, Moczek A, Jablonka E, Odling-Smee J (2015) The extended evolutionary synthesis: its structure, assumptions and predictions. Proc Biol Sci 282(1813):20151019
Laubichler M, Maienschein J (2007) From embryology to evo-devo: a history of developmental evolution. MIT Press, Cambridge and London
Levinton J (2001) Genetics, paleontology and macroevolution, 2nd edn. Cambridge Univ. Press, New York
Levit GS, Meister K (2006) The history of essentialism vs. Ernst Mayr’s ‘essentialism story’: a case study of German idealistic morphology. Theor Biosci 124:281–307
Lewens T (2009) Evo-devo and “typological thinking”: an exculpation. J Exp Zool B 312(8):789–796
Lewens T (2009) What is wrong with typological thinking? Philos Sci 76:355–371
Love AC (2009) Typology reconfigured: from the metaphysics of essentialism to the epistemology of representation. Acta Biotheor 57:51–75
Mayr E (1959) Darwin and the evolutionary theory in biology. In: Meggers J (ed) Evolution and anthropology: a centennial appraisal. The Anthroplogical Society of Washington, Washington, pp 1–10
Mayr E (1959) Typological and population thinking. In: Meggers BJ (ed) Evolution and anthropology: a centennial appraisal. The Anthroplogical Society of Washington, Washington, pp 409–412
Mayr E (1980) Prologue: some thoughts on the history of the evolutionary synthesis. In: Mayr E, Provine WB (eds) The evolutionary synthesis: perspectives on the unification of biology. Harvard Univ Press, Cambridge, pp 1–48
McCoy VE, Saupe EE, Lamsdell JC, Lidya G, Tarhan LG, McMahon S, Lidgard S, Mayer P, Whalen CD, Soriano C, Finney L, Vogt S, Clark EG, Anderson RP, Petermann H, Locatelli ER, Briggs DE (2016) The ‘Tully monster’ is a vertebrate. Nature 532(7600):496–499
O’hara RJ (1997) Population thinking and tree thinking in systematics. Zool Scr 26(4):323–329
Ota KG, Abe G (2016) Goldfish morphology as a model for evolutionary developmental biology. WIREs Dev Biol 5:272–295
Otsuka J (2017) The causal homology concept. Phil Sci 84(5):1128–1139
Owen R (1848) On the archetype and homologies of the vertebrate skeleton. Jon Van Voorst, London
Pigliucci M, Müller GB (2010) Evolution: the extended synthesis. MIT Press, Cambridge
Prentis CW (1906) Extra digits and digital reductions. Pop Sci Mon 68:335–348
Remane A (1952) Die Grundlagen des natürlichen Systems, der vergleichenden Anatomie und der Phylogenetik. Akademische Verlagsgesellschaft, Leipzig
Rieppel O (2005) Modules, kinds and homology. J Exp Zool B 304:18–27
Saccheri I, Hanski I (2008) Natural selection and population dynamics. Trends Ecol Evol 21(6):341–347
Shu DG, Conway Morris S, Han J, Zhang ZF, Yasui K, Janvier P, Chen L, Zhang XL, Liu JN, Li Y, Liu H-Q (2003) Head and backbone of the Early Cambrian vertebrate Haikouichthys. Nature 421(6922):526–529
Simpson GG (1944) Tempo and mode in evolution. Columbia University Press, New York
Sober E (1980) Evolution, population thinking, and essentialism. Phil Sci 47(3):350–383
Solounias N, Danowitz M, Stachtiaris E, Khurana A, Araim M, Sadegh M, Natale J (2018) The evolution and anatomy of the horse manus with an emphasis on digit reduction. R Soc Open Sci 2018:5
Sterrett SG (2002) Darwin’s analogy between artificial and natural selection: how does it go? Stud Hist Philos Sci C 33(1):151–168
Suzuki DG, Tanaka S (2017) A phenomenological and dynamic view of homology: homologs as persistently reproducible modules. Biol Theor 12(3):169–180
Tokita M, Iwai N (2010) Development of the pseudothumb in frogs. Biol Lett 6:517–520
True JR, Haag ES (2001) Developmental system drift and exibility in evolutionary trajectories. Evol Dev 3:109–119
Vervoort M (2011) Regeneration and development in animals. Biol Theor 6:25–35
Wagner GP (2014) Homology, genes, and evolutionary innovation. Princeton Univ Press, Princeton
Wagner GP (2016) What is “homology thinking” and what is it for? J Exp Zool B Mol Dev Evol 326(1):3–8
Winsor MP (2006) The creation of the essentialism story: an exercise in metahistory. Hist Philos Life Sci 28:149–174
Acknowledgements
I thank Yusaku Ohkubo, Senji Tanaka, and Yoshinari Yoshida and two anonymous reviewers for their valuable comments.
Funding
A part of this work is financially supported by the Japan Society for the Promotion of Science (JSPS), Grant Number 18J00045 and 20K00275.
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Suzuki, D.G. Homology thinking reconciles the conceptual conflict between typological and population thinking. Biol Philos 36, 23 (2021). https://doi.org/10.1007/s10539-021-09800-7
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DOI: https://doi.org/10.1007/s10539-021-09800-7