Which is an example of convergent evolution?
a. The hind limb bones found in pythons
b. The third molars in the human mouth
c. The adaptation of the leaf into a cactus spine
d. The development of thorns to protect the plant
e. The elongated snouts of aardvarks, anteaters, and pangolins
e
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The number and variety of species within a community is its:
1.Biodiversity 2.Ecosystem biodiversity 3.Genetic variation 4.Species richness
Gene flow is restricted between subspecies because of some extrinsic barrier, such as rivers or mountain ridges
Indicate whether the statement is true or false
What does the Nernst equation allow us to do?
A. Predict the function of a specific type of neuron. B. Calculate the equilibrium potential for an ion. C. Use a computer program to model axonal transmission. D. Calculate the magnitude of depolarization during an action potential.
What type of chemical bond joins the bases of complementary DNA strands?
A) ionic B) covalent C) hydrophilic D) hydrogen