If Messelson and Stahl's experiment is continued for four generations in bacteria, the ratio of
containing DNA in the fourth generation would be:
Text Solution
Verified by ExpertsMeselson and Stahl found that DNA of the first generation was hybrid or intermediate
and
. It settled in caesium chloride at a level higher than the fully labelled DNA of parent bacteria
. The second generation of bacteria after 40 minutes, contained two types of DNA,
light
and
intermediate
.
The third generation of bacteria after 60 minutes contained two types of DNA, 25% intermediate (
) and
light
in
ratio. The fourth generation after 80 minutes contained
and
DNA in
ratio.
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