Biology, 09.03.2021 06:20, sfritz6456
Green skipper butterflies are preyed on by birds, but fortunately the green colored
butterflies are able to camouflage with their environment. The graph shows the trait
distribution of greerpskipper butterflies after 50 years
of adaptation. Which type of
selection does this represent?
A stabilizing selection where average traits are favored)
B disruptive selection where extreme traits are favored)
C directional selection where one extreme is favored
Answers: 1
Biology, 22.06.2019 10:30, keenansimpkinsoy0oqc
There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.
Answers: 1
Biology, 22.06.2019 13:20, crazymadhatter0
Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains Îą-bungarotoxin).
Answers: 2
Green skipper butterflies are preyed on by birds, but fortunately the green colored
butterflies are...
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