7. You have isolated a protein (Boo) that binds to DNA in the region upstream of the promoter
sequence of the Sys gene. If this protein is a positive regulator, which of the following could be
true? a) Loss-of-function mutation in the gene encoding Boo would cause constitutive expression
of Sys. b) Loss-of-function mutation in the gene encoding Boo would result in little or no
expression of Sys.
Solution
As the protein induces gene expression, then it means it\'s expression will result in little or no
expression of System. Option b is true
sequence of the Sys gene. If this protein is a positive regulator, which of the following could be
true? a) Loss-of-function mutation in the gene encoding Boo would cause constitutive expression
of Sys. b) Loss-of-function mutation in the gene encoding Boo would result in little or no
expression of Sys.
Solution
As the protein induces gene expression, then it means it\'s expression will result in little or no
expression of System. Option b is true
