sister groups
sister groups The twin products of cladogenesis which, under the rules of phylogenetic systematics, must be classified at the same rank taxonomically (i.e. the two daughter lineages that result from the splitting of a single parent species).
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Taxon , tax·on / ˈtaksän/ • n. (pl. tax·a / ˈtaksə/ ) Biol. a taxonomic group of any rank, such as a species, family, or class.
taxon (pl. taxa) Any named ta… Sister chromatid exchange , sister chromatid exchange (SCE) An event, similar to crossing-over, that can occur between sister chromatids at mitosis and meiosis. It may be detect… Species Group , Skip to main content
species group Cladistics , cladistics (klədĬs´tĬks) or phylogenetic systematics (fī´lōjənĕt´Ĭk), an approach to the classification of living things in which organisms are defin… Agnathans , Agnatha
The group Agnatha consists of the jawless fishes, the most primitive group of extant vertebrates. While most agnathan species are now extinct… Indifferent Species , indifferent species A species with no real affinity for any particular community, but which is not rare (as an accidental species would be). It is fi…
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sister groups