In partially diploid E. coli cells with the genotype: F’ i+ o- z+ y- a- / chromosome i- o+ z- y+ a+, which functional gene product(s) would be expressed at high level in the absence of both lactose and glucose?    permease

What kind of mutation is caused by intercalating agents such as proflavin?

 4’ carbon

This is a transversion mutation

The planes of the bases are perpendicular to the DNA helix axis

During splicing in precursor mRNA in mammalian cells, the first RNA cleavage step involves:

They have phosphate groups in the rings

Down Syndrome in humans is caused by

This mutation could be caused by tautomeric shifting of the bases

Which enzyme is not required for prokaryotic DNA replication?