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The advanced brain characters demonstrated in Pteropus could not, therefore, be generalized to imply that all bats are similar to primates. More recently, the flying primate hypothesis was soundly rejected when scientists compared the DNA of bats to that of primates. These genetic studies support the monophyly of bats. [4] [5] [6] [7]
Echolocation in bats and whales also both necessitate high frequency hearing. The protein prestin, which confers high hearing sensitivity in mammals, shows molecular convergence between the two main clades of echolocating bats, and also between bats and dolphins. [28] [29] Other hearing genes also show convergence between echolocating taxa. [30]
Bats have been traditionally thought to be a monophyletic group; according to this model, all living fruit bats and microbats (Microchiroptera) are descendants of a common ancestor species that was already capable of flight. [3] However, there are alternate hypotheses which conclude that bats are polyphyletic.
All groups with scientific names are clades, or monophyletic groups, and the sequence of scientific classification reflects the evolutionary history of the related lineages. Groups that are traditionally named are shown on the right; they form an "ascending series" (per Clark, see above), and several groups are paraphyletic:
The term polyphyly, or polyphyletic, derives from the two Ancient Greek words πολύς (polús) 'many, a lot of', and φῦλον (phûlon) 'genus, species', [8] [9] and refers to the fact that a polyphyletic group includes organisms (e.g., genera, species) arising from multiple ancestral sources.
Bats are flying mammals of the order Chiroptera (/ k aɪ ˈ r ɒ p t ər ə /). [a] With their forelimbs adapted as wings, they are the only mammals capable of true and sustained flight. Bats are more agile in flight than most birds, flying with their very long spread-out digits covered with a thin membrane or patagium.
Facing elimination in the best-of-three series after A&M won Saturday's game 9-5, the Vols broke out their black jerseys in which they had a 9–1 record this season. Make that 10–1 now. Make ...
Bats use echolocation to navigate and perceive objects. This method of perception is similar to the human sense of vision. Both sonar and vision are regarded as perceptual experiences. While it is possible to imagine what it would be like to fly, navigate by sonar, hang upside down and eat insects like a bat, that is not the same as a bat's ...