In prokaryote genetics, Conjugation can be defined as the:
A. Direct transfer of DNA from one bacterial cell to another
B. Use of a bacteriophage (bacterial virus) to transfer DNA between cells
C. Naked DNA is taken up from the environment by bacterial cells
D. Frameshift mutation
Ans: A. Direct transfer of DNA from one bacterial cell to another
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_____ selected species have a low rate of per capita growth.
A. r- B. S- C. K- D. ?- E. J-
Living members of the ____ lineage include the sharks, skates, and rays, all of which have skeletons made entirely of
cartilage.
a. Petromyzontoidea b. Chondrichthyes c. Actinopterygii d. Myxinoidea e. Sarcopterygii
If a virus is latent, it
A. has not entered a lysogenic cycle. B. is not actively replicating. C. cannot be a retrovirus. D. is easy to develop immunity against it. E. is gaining a new envelope via "budding."
Which of the following is a function of the protein component of chromosomes?
A. It carries a portion of the genetic information. B. It helps to translate the genetic message. C. It contains the enzymes that replicate the DNA. D. It packages the DNA strands.