Which nitrogen containing base is found in RNA but not in DNA?

Which means of genetic recombination in bacteria often makes use of pili?

In the infamous anthrax attacks of 2001, several letters were received at the offices of two U.S. senators and various news media outlets. The letters contained dry granular or powdery material. Seventeen people who came into contact with the material from the letters suffered anthrax infections; five more died of anthrax. How could dried-out material cause anthrax?

A chain of spherical bacterial cells is called a ___________.

Which statement about bacteria is incorrect?

A silent mutation is more likely to occur as a result of

Which process requires the participation of all three types of RNA?

If an individual expresses a dominant disease, which of the following is true?

If the parental genotype if EeWw what are the potential allele combinations that could occur at the end of Meiosis?

 woman with Type AB blood marries a man with Type B blood. If they have children, what are all the possible blood types for these individuals?