When brought together in a zoo, two species are capable of mating and producing fertile offspring. Why may they still be considered two distinct species?
A) Wild populations of the two species have different geographic distributions.
B) In the wild, members of one species prey upon members of the other species.
C) Zoos are not natural environments.
D) The two species look very different.
C
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Escherichia coli ____
a. has only recently been employed in scientific research b. can undergo natural transformation c. is a disease caused by prions d. replicates slowly e. can be infected by bacteriophages
What are the three things DNA must be able to do in order to serve as the genetic material?
What will be an ideal response?
Some bacteria are resistant to antimicrobials due to the activity of ________, which removes many of them
A) plasmids B) porins C) efflux pumps D) lipopolysaccharides E) ribosomes
The actions of Xist result in an organism that is a phenotypic mosaic.
Answer the following statement true (T) or false (F)