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The term sister group is used in phylogenetic analysis, however, only groups identified in the analysis are labeled as "sister groups".. An example is birds, whose commonly cited living sister group is the crocodiles, but that is true only when discussing extant organisms; [3] [4] when other, extinct groups are considered, the relationship between birds and crocodiles appears distant.
Whippomorpha is a suborder located within the Order Artiodactyla, and the clade Cetancodontamorpha. It contains the clades Hippopotamoidea (ancestors of hippopotamuses) and Cetaceamorpha (ancestors of whales and dolphins). Whippomorpha is considered a sister clade to Ruminantia (which contains cattle, sheep and deer), as well as the extinct ...
The CAM clade is a clade containing the Archaeplastida (Plantae sensu lato) and the clade Pancryptista (which, in turn, contains Cryptista and Microheliella maris).This clade is supported by phylogenomic analyses from 2022 that mainly support the clade Pancryptista, but also mention that Archaeplastida's closest lineage is Pancryptista, making them sister taxa. [1]
One study based on DNA analysis suggests that Scandentia and Primates are sister clades, but does not discuss the position of Dermoptera. [9] Although it is known that Scandentia is one of the most basal Euarchontoglires clades, the exact phylogenetic position is not yet considered resolved, and it may be a sister of Glires, Primatomorpha or Dermoptera or to all other Euarchontoglires.
In terms of mtDNA, however, it appears that modern humans and Neanderthals form a sister clade, with Denisovans as basal outgroup. The split of Neanderthal and modern human mtDNA is dated to about 498–295 kya, i.e. significantly younger than the date estimated based on nuclear DNA.
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A person in California tested positive for mpox clade I, the first time the strain has been reported in the U.S. ... the Centers for Disease Control and Prevention said in a news release. State ...
Whether the Xenacoelomorpha clade is the sister group to the Ambulacraria remains a contentious issue, with some authors arguing that the former should be placed more basally among metazoans, [5] [6] [1] and other authors asserting that the best choices of phylogenetic methods support the position of Xenacoelomorpha as the sister group to ...