How could overlapping genes in a positive ssDNA virus genome be predicted?
A) Convert the positive ssDNA into its complementary ssDNA and search for genes in the negative ssDNA strand for sequences used in more than one predicted gene.
B) Directly search the three frames of the positive ssDNA for genes that have sequences where more than one gene is predicted.
C) Convert the positive ssDNA into negative ssDNA and search all six possible frames for genes that use part of the same sequence.
D) Convert the positive ssDNA into its complementary ssDNA and search for genes in the negative ssDNA strand that also share a complementary gene in the positive strand.
Answer: B
You might also like to view...
The basic tool of genetic regulation is the ability of certain proteins to bind to specific
A. regulatory RNA sequences. B. regulatory DNA sequences. C. repressor parts of the gene. D. promoter parts of the gene. E. enzymes of the cell.
In African finch populations, selection pressures favor birds with bills that are ________
a. either large or small, in an example of disruptive selection b. small, in an example of directional selection c. large, in an example of directional selection d. large, in an example of sexual selection
Currently, two extant elephant species (X and Y) are placed in the genus Loxodonta, and a third species (Z) is placed in the genus Elephas. Thus, which statement should be true?
A. Species X and Y are not related to species Z. B. Species X and Y share a common ancestor that is still extant (in other words, not yet extinct). C. Species X and Y are the result of artificial selection from an ancestral species Z. D. Species X and Y share a greater number of homologies with each other than either does with species Z. E. Species X, Y, and Z share a common ancestor, but nothing more can be claimed than this.
Which of the following is NOT a feature associated with viruses?
A. Cytoplasm B. Genetic information C. Protein coat D. Envelope