Question 2. Bacteria are grown in a medium containing 15NH₂Cl for a number of generations so that all of the DNA is made of fully "heavy" DNA. The bacteria are moved to a new medium and grown in ¹4NH₂Cl so that all new DNA will be "light." After two generation times, what does the DNA look like? A. All of the DNA is made of 2 "light" strands. B. Half of the DNA is made of 2 "light" strands and half of the DNA is made of 1 "light" strand and 1 "heavy" strand. C. All of the DNA is made of 1 "heavy" strand and 1 "light" strand. D. Each strand is made of a mixture of "heavy" and "light" DNA, with each strand being between 75% and 100% "light". A B Multiple Choice C D E

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question 2. Bacteria are grown in a medium containing
15NH₂Cl for a number of generations so that all of the DNA is
made of fully "heavy" DNA. The bacteria are moved to a new
medium and grown in ¹4NH₂Cl so that all new DNA will be
"light." After two generation times, what does the DNA look
like?
A. All of the DNA is made of 2 "light" strands.
B. Half of the DNA is made of 2 "light" strands and half of the DNA is
made of 1 "light" strand and 1 "heavy" strand.
C. All of the DNA is made of 1 "heavy" strand and 1 "light" strand.
D. Each strand is made of a mixture of "heavy" and "light" DNA, with
each strand being between 75% and 100% "light".
A
B
Multiple Choice
с
D
E
Transcribed Image Text:Question 2. Bacteria are grown in a medium containing 15NH₂Cl for a number of generations so that all of the DNA is made of fully "heavy" DNA. The bacteria are moved to a new medium and grown in ¹4NH₂Cl so that all new DNA will be "light." After two generation times, what does the DNA look like? A. All of the DNA is made of 2 "light" strands. B. Half of the DNA is made of 2 "light" strands and half of the DNA is made of 1 "light" strand and 1 "heavy" strand. C. All of the DNA is made of 1 "heavy" strand and 1 "light" strand. D. Each strand is made of a mixture of "heavy" and "light" DNA, with each strand being between 75% and 100% "light". A B Multiple Choice с D E
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