Which would you find in the heart of a fish?
A. two atria and one ventricle
B. one atrium and one ventricle
C. two atria and a partially divided ventricle
D. one atrium and two ventricles
E. two atria and two ventricles
Answer: B
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A group of turtles is washed ashore on an island and no longer breeds with any turtles other than those on the island. After centuries of isolation, they no longer interbreed with the original species
This situation is best described by the term: A. allopatric speciation. B. migration. C. phylogenetic speciation. D. genetic drift. E. natural selection.
Name and briefly characterize the four classes of fishes. Indicate which class is considered to be most similar to the ancestral chordate and which is the ancestor of the land vertebrates, justifying your choices
What will be an ideal response?
In lakes, the open-water surface layer is called the ____
a. benthic zone b. abyssal zone c. limnetic zone d. littoral zone e. profundal zone
The ________ pathway in lambda phage leads to integration of viral DNA with that of the host, while the ________ pathway leads to induction of progeny viruses
A) lytic, lysogenic B) invasive, replicative C) repressive, inductive D) lysogenic, lytic E) replicative, lysogenic