The fact that DNA is the molecule containing the genetic code for all life on Earth is a part of
A. evidence of artificial selection.
B. biogeographical evidence.
C. comparative embryological evidence.
D. comparative anatomical evidence.
E. biochemical evidence.
Ans: E. biochemical evidence.
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The importance of phage-mediated lateral gene transfer by virioplankton was illustrated by the fact that cyanophages thought to infect Synechococcus and Prochlorococcus carry the structural gene for ________.
A. a photosynthetic reaction center protein B. phycocyanin production C. nitrogenase D. All of the choices are correct.
Why do chromosomes coil during mitosis?
A) to increase their potential energy B) to allow the chromosomes to move without becoming entangled and breaking C) to allow the chromosomes to fit within the nuclear envelope D) to allow the sister chromatids to remain attached E) to provide for the structure of the centromere
Bacterial DNA replication occurs at a rate of ________.
A. 50-100 base pairs per second B. 50-100 base pairs per minute C. 750-1,000 base pairs per second D. 750-1,000 base pairs per minute
Adult neural stem cell derived neurons localize to ____________.
a. Hippocampus b. Olfactory bulb c. Corpus callosum d. All of the above