Salamanders belong to which of the following lineages?
a. Caudata
b. Aves
c. Squamata
d. Gymnophiona
e. Anura
A
You might also like to view...
The equation 6CO2 + 6H2O C6H12O6 + 6O2 represents the process of ____
Fill in the blank with the appropriate word.
Why is the production of transgenic plants somewhat easier than the production of transgenic animals?
A. Plant cells are pluripotent. B. Plant cells are more stable than animal cells. C. Plant cells are totipotent. D. Plant cells are more highly evolved. E. Plant cells readily take up vectors, whereas animal cells do not.
Can two different species that are members of the same clade have more than one common ancestor? Choose the MOST correct answer and explanation.
A. No. Because they are members of a clade, by definition they can have only one common ancestor. B. Maybe. Two species in the same clade can have more than one common ancestor only in cases where horizontal gene transfer from a third, previously unrelated, species has occurred. C. Maybe. If they are members of a paraphyletic clade, they can have more than one common ancestor. D. Yes. Although two species in the same clade have only one most recent common ancestor, they also have a number of older common ancestors that occurred earlier in their evolutionary history. E. Yes. Two species of the same clade always have eight common ancestors, matching the number of levels higher than species in the taxonomic hierarchy.
The period following an action potential during which a neuron cannot be stimulated to generate another action potential is referred to as
A. the resting period. B. the refractory period. C. the critical period. D. the threshold period. E. the inactivation period.