Alyssa R. Wheeler

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Big brown bats (Eptesicus fuscus) emit trains of brief, wideband frequency-modulated (FM) echolocation sounds and use echoes of these sounds to orient, find insects, and guide flight through vegetation. They are observed to emit sounds that alternate between short and long inter-pulse intervals (IPIs), forming sonar sound groups. The occurrence of these(More)
The interaction of the Escherichia coli RNA polymerase with several forms of DNA has been studied by difference absorption spectroscopy, protection against endonucleases, and limited, specific initiation. The core enzyme is able to open duplex poly[d(A-T)] in 10 mM KCl. The core enzyme binds to promoters in linear DNA in a salt-dependent manner, but it does(More)
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