Refer to the paragraph on the Venter et al. paper and the table above. How do you think expected genes were placed into the categories shown in the preceding table?
A) by searching for open reading frames (ORFs), especially those with translation start and stop sites
B) by searching for matches, especially of the predicted gene products, with previously identified gene products of known function
C) by expressing the cloned genes in E. coli and then running biochemical analyses of the products
D) by searching for similarity between ORFs and those in existing databases
Answer: B
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