Multiple Choice
X-inactivation ــــــــــــــــــــــــ.
A) only occurs in males
B) is the deactivation of both X chromosomes in all females
C) shuts down one of the two X chromosomes in females
D) occurs by the action of histone acetylation
Correct Answer:

Verified
Correct Answer:
Verified
Q2: Which of the following is commonly used
Q3: Specific transcription factorsــــــــــــــــــــــ .<br>A)modulate gene expression in
Q4: Simple repressors are common in eukaryotes.
Q5: Xist isــــــــــــــــــــــــــ .<br>A)a gene encoding an untranslated
Q6: Housekeeping genes are always ــــــــــــــــــــــ.<br>A)off until needed<br>B)on<br>C)induced<br>D)repressed
Q7: Euchromatinـــــــــــــــــــــ .<br>A)is only found in prokaryotes<br>B)does not
Q8: Acetylated histonesــــــــــــــــــــــــ .<br>A)form highly condensed heterochromatin<br>B)are a
Q9: DNA sequences in eukaryotes that are rich
Q10: In eukaryotes,negative regulation occurs by ـــــــــــــــــــــــــــــ.<br>A)obstructing RNA