What can you say based on a comparison of lanes 2 and 3? O The band labeled DNA is indeed DNA O The DNase does not digest tRNA The extract does not contain any endogenous nucleases O Incubation at 60°C was sufficient to denature the DNase

Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter8: The Structure, Replication, And Chromosomal Organization Of Dna
Section: Chapter Questions
Problem 15QP: Using Figures 8.7 and 8.9 as a guide, draw a dinucleotide composed of C and A. Next to this, draw...
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1 2 3 4
Well
DNA
rRNA
tRNA
In the gel above, lanes 1, 2, and 3 contain the
bacterial cell extract and lane 4 contains tRNA.
DNase was added to the mixture in lanes 3 and
4: lane 1 was incubated at 0°C and lanes 2, 3,
and 4 were incubated at 37°C.
What can you say based on a comparison of
lanes 2 and 3?
The band labeled DNA is indeed DNA
The DNase does not digest tRNA
The extract does not contain any endogenous
nucleases
Incubation at 60°C was sufficient to denature the
DNase
Transcribed Image Text:1 2 3 4 Well DNA rRNA tRNA In the gel above, lanes 1, 2, and 3 contain the bacterial cell extract and lane 4 contains tRNA. DNase was added to the mixture in lanes 3 and 4: lane 1 was incubated at 0°C and lanes 2, 3, and 4 were incubated at 37°C. What can you say based on a comparison of lanes 2 and 3? The band labeled DNA is indeed DNA The DNase does not digest tRNA The extract does not contain any endogenous nucleases Incubation at 60°C was sufficient to denature the DNase
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