x   This DNA sequence occurs within the coding sequence of a gene. The first three nucleotides (underlined) code for glutamic acid (Glu).  The following DNA mutation is likely to result in a shorter than normal mRNA: A -> T at position 82

RNA contains uracil instead of cytosine

A ribonucleotide triphosphate used in RNA synthesis has an OH group on this carbon in the sugar portion of the nucleotide:      2′

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