The "Central Dogma" of molecular biology described by Watson and Crick describes
A. the passing of genetic information from DNA to RNA by translation.
B. the passing of genetic information from RNA to protein by transcription.
C. the inheritance of traits between generations.
D. the production of energy in a cell.
E. the directional flow of genetic information in cells.
A. the passing of genetic information from DNA to RNA by translation.
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The immediate ancestors of plants were:
A. charophyceans B. red algae C. kelp D. cyanobacteria E. dinoflagellates with plastids
With the sequence of the gene-coding regions of the human genome in hand and the development of newer sequencing methods, scientists ____
a. now know that the types of mutations present in all cancers are very similar b. can now sequence and analyze the protein-coding genes in cancer cells c. are still unable to systematically identify all the mutations present in a cancer cell d. found that the number of mutational events that occur during the transition from normal to malignant cells is much smaller than previously thought e. found that most tumors had at least 100 mutations in common with any other tumor, emphasizing the common origin of cancer
Lizards can control spider populations on Caribbean islands by which density dependent
mechanism(s)?
a. Predation. b. Competition. c. Predation on a common predator. d. Predation and competition. e. Predation, competition, and predation on a common predator.
Cleavage is indicated by the letter ____
a. A b. B c. C d. D e. E