The table below summarises the three stages of Meselson and Stahl's experiment and their results. (a) Complete the table by drawing, in the appropriate boxes, diagrams of the DNA molecules and mark the position and size of the DNA bands in the tubes. Diagram to show the strands in the DNA molecules of the bacteria separating solution Experimental stage Position and size of DNA bands in the tube of Stage 1 Bacteria grown for several generations in culture medium containing heavy nitrogen Stage 2 The bacteria from the end of stage 1 were grown for another generation in culture medium containing light nitrogen TA2G - Completed forms must be avalable for Open Awards external moderation purposes, Page 7 of 13 Stage 3 The bacteria from the end of stage 2 were grown for one more generation in culture medium containing light nitrogen (b) The bacteria at the end of stage two were grown for five more generations. After each generation, what would you expect to see in the test tube? Draw these in the test tubes below. Gen. 0 Gen. 1 Gen. 2 Gen.3 Gen.4 (c) Which part of the DNA molecule would be expected to incorporate the nitrogen?
The table below summarises the three stages of Meselson and Stahl's experiment and their results. (a) Complete the table by drawing, in the appropriate boxes, diagrams of the DNA molecules and mark the position and size of the DNA bands in the tubes. Diagram to show the strands in the DNA molecules of the bacteria separating solution Experimental stage Position and size of DNA bands in the tube of Stage 1 Bacteria grown for several generations in culture medium containing heavy nitrogen Stage 2 The bacteria from the end of stage 1 were grown for another generation in culture medium containing light nitrogen TA2G - Completed forms must be avalable for Open Awards external moderation purposes, Page 7 of 13 Stage 3 The bacteria from the end of stage 2 were grown for one more generation in culture medium containing light nitrogen (b) The bacteria at the end of stage two were grown for five more generations. After each generation, what would you expect to see in the test tube? Draw these in the test tubes below. Gen. 0 Gen. 1 Gen. 2 Gen.3 Gen.4 (c) Which part of the DNA molecule would be expected to incorporate the nitrogen?
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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Transcribed Image Text:The table below summarises the three stages of Meselson and Stahl's experiment and
their results.
(a) Complete the table by drawing, in the appropriate boxes, diagrams of the DNA
molecules and mark the position and size of the DNA bands in the tubes.
Experimental stage
Diagram to show the
strands in the DNA
Position and size of DNA
bands in the tube of
molecules of the bacteria separating solution
Stage 1
Bacteria grown for several
generations in culture
medium containing heavy
nitrogen
Stage 2
The bacteria from the end
of stage 1 were grown for
another generation in
culture medium containing
light nitrogen
TA2G - Completed forms must be available for Open Awards extermal moderation purposes. Page 7 of 13
Stage 3
The bacteria from the end
of stage 2 were grown for
one more generation in
culture medium containing
light nitrogen
(b) The bacteria at the end of stage two were grown for five more generations. After
each generation, what would you expect to see in the test tube? Draw these in the
test tubes below.
Gen. 0
Gen. 1
Gen. 2
Gen.3
Gen.4
(c) Which part of the DNA molecule would be expected to incorporate the nitrogen?
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