The stop codon UAG signals the DNA polymerase to stop replicating the chromosome.

Describe two mechanisms used by bacteria to defend DNAs from invading bacterialphages. (Required for only graduate students. Extra credit for undergrads.) Reasonable details are required for full credits. (2 points)

Sigma (σ) factors are the proteins that guide RNA polymerase to initiate transcription of genes.

In order to detect Coronavirus RNA by real-time PCR, the viral RNA needs to be converted into cDNA.

A lithotroph would be able to use ____ as a source of electrons?

For the WinRDBI njoin operation between two tables to be meaningful, which condition must be true?

How many logical schema (conceptual schema) will be there for a database?

A set of permissible legal values can be specified through ____________________.

For the following relational algebra division operation          (Ta with x rows) / (Tb with y rows) => (Quotient with z rows) which of the following conditions will be correct?  

What is correct about a stored procedure?