About 75% of the Earth's surface is covered by
A) water.
B) bare ground.
C) forest.
D) grassland.
A
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A genotyping microarray would be useful in determining if the chromosomal mutation called duplication took place
A. true B. false
A collection of clones containing all the DNA sequences carried by an individual is called a genomic library
a. True b. False Indicate whether the statement is true or false
Which of the following series is arranged in the correct sequence for nitrogen fixation and its subsequent use?
A. atmospheric nitrogen; use of bacterial nitrogenase; production of ammonia; conversion by plants or algae; synthesis of proteins B. atmospheric nitrogen; use of bacterial nitrogenase; conversion by plants or algae; production of ammonia; synthesis of proteins C. atmospheric nitrogen; production of ammonia; use of bacterial nitrogenase; conversion by plants or algae; synthesis of proteins D. atmospheric nitrogen; production of ammonia; use of bacterial nitrogenase; synthesis of proteins; conversion by plants or algae E. ammonia; conversion by plants and algae; production of atmospheric nitrogen; use of bacterial nitrogenase; synthesis of proteins
A scientist obtains the DNA sequence datafor a bacterial plasmid. The data includes As, Ts, and Gs, but no Cs. What
is the most likely cause of this result?
a. ddCs were omitted from the sequencing reaction. b. The cytosine deoxyribonucleotides were omitted from the sequencing reaction. c. DNA polymerase was omitted from the sequencing reaction mix. d. The ddG fluorescent tags were degraded. e. There is no cytosine in this DNA molecule.