In order for a eukaryotic gene to be engineered into a bacterial colony to be expressed, what must be included in addition to the coding exons of the gene?

a) the introns
b) eukaryotic polymerases
c) a bacterial promoter sequence
d) eukaryotic ribosomal subunits
e) eukaryotic trnas

The correct option is C) a bacterial promoter sequence

Explanation:

In the field of genetics, a promoter is defined as a sequence which initiates the process of transcription of a gene. In the bacterial cell, the promoter region is present upstream and the process of transcription won't occur unless the promoter sequences is present. Hence, in addition to our desired code of exons, a bacterial promoter sequence must be attached for the expression of the genes.

Other options like introns are not required because introns are the non- coding sequences and they do not have any role to play in the expression of genes.

wheres the answers ?

the real answer is b. scintillation counter