Multiple Choice
Bacteria are grown in 15N (heavy) medium and then transferred to 14N (light) medium and are allowed to replicate for 2 generations.The DNA is subsequently isolated and centrifuged in a CsCl2 gradient to yield what type of gradient band(s) ?
A) one heavy band
B) one light band
C) one half-heavy (intermediate to heavy and light) band
D) one heavy and one half-heavy band
E) one light and one half-heavy band
Correct Answer:

Verified
Correct Answer:
Verified
Q24: Which purine base forms 3 hydrogen bonds
Q25: DNA is a double helix structure whose
Q26: Griffith first proposed the "transformation principle" through
Q27: What is the complement DNA strand to
Q28: Which statement about DNA replication is INCORRECT?<br>A)It
Q30: The building blocks of DNA are<br>A)genes.<br>B)double helices.<br>C)amino
Q31: Which statement best describes DNA polymerase?<br>A)It is
Q32: Okazaki fragments are sequences of DNA most
Q33: What can be said about interphase chromosomes?<br>A)Interphase
Q34: During DNA replication,proteins that are important for