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2R hypothesis

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The 2R hypothesis or Ohno's hypothesis, first proposed by Susumu Ohno in 1970,Ohno, Susumu (1970). [1]

34 relations: Aoife McLysaght, Cephalochordate, Chromosomal rearrangement, Chromosome, Ciona intestinalis, Evolution, Evolution & Development, Gene duplication, Gene family, Genetic linkage, Genetic recombination, Genome, Genome Research, Homology (biology), Hox gene, Human genome, Hybrid (biology), Hypothesis, Isozyme, Journal of Molecular Evolution, Kenneth H. Wolfe, Lancelet, Michael Benton, Molecular phylogenetics, Nature (journal), Nature Genetics, Paleopolyploidy, Phylogenetic tree, PLOS Genetics, Polyploid, Susumu Ohno, Tunicate, Vertebrate, Vertebrate Palaeontology (Benton).

Aoife McLysaght

Aoife McLysaght is a Professor in the Molecular Evolution Laboratory of the in Ireland.

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A cephalochordate (from Greek: κεφαλή, "head" and χορδή, "chord") is an animal in the chordate subphylum, Cephalochordata.

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Chromosomal rearrangement

In genetics, a chromosomal rearrangement is a mutation that is a type of chromosome abnormality involving a change in the structure of the native chromosome.

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A chromosome (from Ancient Greek: χρωμόσωμα, chromosoma, chroma means colour, soma means body) is a DNA molecule with part or all of the genetic material (genome) of an organism.

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Ciona intestinalis

Ciona intestinalis (sometimes known by the common name of vase tunicate) is an ascidian (sea squirt), a tunicate with very soft tunic.

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Evolution is change in the heritable characteristics of biological populations over successive generations.

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Evolution & Development

Evolution & Development is a peer-reviewed scientific journal publishing material at the interface of evolutionary and developmental biology.

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Gene duplication

Gene duplication (or chromosomal duplication or gene amplification) is a major mechanism through which new genetic material is generated during molecular evolution.

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Gene family

A gene family is a set of several similar genes, formed by duplication of a single original gene, and generally with similar biochemical functions.

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Genetic linkage

Genetic linkage is the tendency of DNA sequences that are close together on a chromosome to be inherited together during the meiosis phase of sexual reproduction.

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Genetic recombination

Genetic recombination (aka genetic reshuffling) is the production of offspring with combinations of traits that differ from those found in either parent.

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In the fields of molecular biology and genetics, a genome is the genetic material of an organism.

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Genome Research

Genome Research is a peer-reviewed scientific journal published by Cold Spring Harbor Laboratory Press.

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Homology (biology)

In biology, homology is the existence of shared ancestry between a pair of structures, or genes, in different taxa.

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Hox gene

Hox genes, a subset of homeotic genes, are a group of related genes that control the body plan of an embryo along the head-tail axis.

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Human genome

The human genome is the complete set of nucleic acid sequences for humans, encoded as DNA within the 23 chromosome pairs in cell nuclei and in a small DNA molecule found within individual mitochondria.

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Hybrid (biology)

In biology, a hybrid, or crossbreed, is the result of combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction.

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A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon.

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Isozymes (also known as isoenzymes or more generally as multiple forms of enzymes) are enzymes that differ in amino acid sequence but catalyze the same chemical reaction.

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Journal of Molecular Evolution

The Journal of Molecular Evolution is a peer-reviewed scientific journal that covers molecular evolution.

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Kenneth H. Wolfe

Kenneth Henry Wolfe is Professor of Genomic Evolution at University College Dublin (UCD), Ireland.

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The lancelets — also known as amphioxi (singular, amphioxus) consist of about 32 species of fish-like marine chordates in the order Amphioxiformes.

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Michael Benton

Michael James "Mike" Benton FRS (born 8 April 1956) is a British palaeontologist, and professor of vertebrate palaeontology in the School of Earth Sciences at the University of Bristol.

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Molecular phylogenetics

Molecular phylogenetics is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominately in DNA sequences, to gain information on an organism's evolutionary relationships.

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Nature (journal)

Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.

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Nature Genetics

Nature Genetics is a scientific journal founded as part of the ''Nature'' family of journals in 1992.

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Paleopolyploidy is the result of genome duplications which occurred at least several million years ago (MYA).

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Phylogenetic tree

A phylogenetic tree or evolutionary tree is a branching diagram or "tree" showing the evolutionary relationships among various biological species or other entities—their phylogeny—based upon similarities and differences in their physical or genetic characteristics.

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PLOS Genetics

PLOS Genetics is an open access peer-reviewed genetics-focused journal established in 2005 by the non-profit organization Public Library of Science (PLOS).

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Polyploid cells and organisms are those containing more than two paired (homologous) sets of chromosomes.

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Susumu Ohno

was a Japanese-American geneticist and evolutionary biologist, and seminal researcher in the field of molecular evolution.

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A tunicate is a marine invertebrate animal, a member of the subphylum Tunicata, which is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords.

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Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).

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Vertebrate Palaeontology (Benton)

Vertebrate Palaeontology is a basic textbook on vertebrate paleontology by Michael J. Benton, published by Blackwell's.

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Redirects here:

2R Hypothesis, 2R-WGD, 2r hypothesis, Ohno's hypothesis.


[1] https://en.wikipedia.org/wiki/2R_hypothesis

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