Compared with eukaryotic chromosomes, bacterial chromosomes are ________
A) large, mainly organized in single-gene transcription units without introns
B) small, with high gene density
C) small, mainly organized in single-gene transcription units with introns
D) large, triple-helix, Z-DNA, organized in single gene units with introns
E) large, mainly organized in polygenic transcription units without introns
B
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Members of the ____ lineage, known as bristle worms, are found primarily in marine environments and are
characterized by the presence of parapodia.
a. Hirudinea b. Polychaeta c. Monogenoidea d. Cestoda e. Oligochaeta
The map distances for four linked genes are as follows: A is 22mu from B, B is 7mu from C, C is 9mu
from D, B is 2mu from D, A is 20mu from D, and A is 29mu from C. Based on these data, what is the order of these four genes on the chromosome?
a. ABCD b. ADBC c. ABDC d. BADC e. CADB
Answer the following questions true (T) or false (F)
1. Human herpesvirus 4 is better known as cytomegalovirus. 2. Both bubonic and pneumonic plague cause the formation of buboes and tissue necrosis of the extremities. 3. Cytomegalovirus may be latent for years and reactivate when immunosuppression occurs.
Plague includes
A. septicemic form – called black death. B. bubonic form – buboes develop. C. pneumonic form – sputum highly contagious. D. disease control – control of rodent population. E. All of the choices are correct.