GRE Subject Test: Biochemistry, Cell, and Molecular Biology › Gene Regulation
Histone acetyltransferases (HATs) transfer acetyl groups from acetyl CoA to lysine residues on histones. What is the purpose of this transfer?
Histone acetyltransferases (HATs) transfer acetyl groups from acetyl CoA to lysine residues on histones. What is the purpose of this transfer?
Inducible operons are bound by a repressor and turned off under normal conditions. How are these operons turned on?
Inducible operons are bound by a repressor and turned off under normal conditions. How are these operons turned on?
Mutations in two or more genes cause cell death, however, a mutation in only one of the genes is not lethal.
Which of the following best describes this phenomenon?
Mutations in two or more genes cause cell death, however, a mutation in only one of the genes is not lethal.
Which of the following best describes this phenomenon?
Where are promoters typically found in DNA?
Where are promoters typically found in DNA?
X-chromosome inactivation occurs in females in which one X-chromosome is silenced and transcriptionally inactivated. The X-inactive specific transcript (Xist) gene is responsible for mediating this inactivation.
What does Xist encode?
X-chromosome inactivation occurs in females in which one X-chromosome is silenced and transcriptionally inactivated. The X-inactive specific transcript (Xist) gene is responsible for mediating this inactivation.
What does Xist encode?