Which of the following describes populations that are genetically isolated?
A. They do not share the same mutations.
B. They do not live in the same areas.
C. They do not exchange genetic information.
D. They do not originate from the same
population.
E. They do not evolve.
C
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In cells infected with the polio virus, there is an inhibition of protein trafficking between two organelles. Vesicles are kept from forming and therefore proteins cannot be moved. Based on your knowledge of organelle function, what two organelles are involved here?
What will be an ideal response?
Ancestors of the koala lived on the ground, but modern koalas live in trees and eat eucalyptus leaves, which are poisonous to most other animals. The difference between the ancestor and modern koalas was caused by
A. the presence of homologous structures B. the presence of vestigal organs C. selective breeding D. natural selection
The water lattice illustrated in the figure above forms as a result of ____ between water molecules
a. covalent bonds b. hydrogen bonds c. nonpolar interactions d. ionic bonds e. van der Walls forces
Which of the following fishes has a jaw,
scales, and a cartilaginous skeleton?
a. lampreys b. goldfish c. coelacanths d. sharks e. more than one of these