In which of the stages below does each chromosome consist of two DNA molecules? (I. metaphase, II. telophase, III. prophase, IV. anaphase)
A) I and III
B) I, III, and IV
C) I, II, and III
D) I, II, III, and IV
E) III and IV
A
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The Meselson-Stahl experiments supported the model of dispersive DNA replication
Indicate whether the statement is true or false
Clayton and colleagues (2003 ) examined the frequency of host shifts observed among both wing feather and body lice that infect doves
They observed that body lice rarely shift host species, whereas wing feather lice often shift from one species to another. The higher frequency of host shifts observed in wing feather lice is due to the observation that ________. A) wing feathers containing lice molt frequently, and are frequently used by other hosts to build nests B) body feathers do not come into contact with other hosts as frequently as wing feathers C) the lice that infect wing feathers often move from host to host on a parasitic fly D) doves preen each other's wing feathers at a higher frequency than body feathers
Propionibacterium acnes is aerotolerant, meaning.
a) It prefers oxygen for growth but can survive without it b) It cannot survive in an oxygen rich environment c) Its survival is not affected by the presence or absence of oxygen d) It absolutely requires oxygen for survival
Plasmodium, the causative agent of malaria, undergoes multiple mitoses before the release of uninucleate daughter cells called (gametocytes/schizonts/coencytes).
Fill in the blank(s) with the appropriate word(s).