6. In 1928, before DNA was recognized as the hereditary material, F Griffith performed a series of experiments in which he infected the mice with two different strains of pneumonia causing bacteria (S. pneumonia): the S strain was smooth and virulent (caused disease) and the R strain was rough and not virulent (did not cause disease). Your supervisor provides you with three unknown samples of S. pneumonia that were stored by Griffith and labeled as "A", "B" and "C. He then asks you to characterize these samples as virulent and smooth or not virulent and rough. Not knowing what each sample contains, you decide to inject these samples into mice both individually and in combination. You then obtain blood samples from these mice to look for the type of bacteria. You also record whether the mice live or die and tabulate your data as follows. Assuming that each sample contained only one type of bacterial strain in a pure form, what type of S. pneumonia was in samples 'A', 'B' and 'C'? Provide an explanation for your each sample. Set 1 Sample injected Response of the mice Type of strain recovered from mice 1 A Live Live Dead Dead None Live R strain Live S strain Live R and live S strains 2 C A + B B+C C+A 4 Dead Dead Live R and live S strains Live S strain 6
6. In 1928, before DNA was recognized as the hereditary material, F Griffith performed a series of experiments in which he infected the mice with two different strains of pneumonia causing bacteria (S. pneumonia): the S strain was smooth and virulent (caused disease) and the R strain was rough and not virulent (did not cause disease). Your supervisor provides you with three unknown samples of S. pneumonia that were stored by Griffith and labeled as "A", "B" and "C. He then asks you to characterize these samples as virulent and smooth or not virulent and rough. Not knowing what each sample contains, you decide to inject these samples into mice both individually and in combination. You then obtain blood samples from these mice to look for the type of bacteria. You also record whether the mice live or die and tabulate your data as follows. Assuming that each sample contained only one type of bacterial strain in a pure form, what type of S. pneumonia was in samples 'A', 'B' and 'C'? Provide an explanation for your each sample. Set 1 Sample injected Response of the mice Type of strain recovered from mice 1 A Live Live Dead Dead None Live R strain Live S strain Live R and live S strains 2 C A + B B+C C+A 4 Dead Dead Live R and live S strains Live S strain 6
Biology (MindTap Course List)
11th Edition
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Chapter12: Dna: The Carrier Of Genetic Information
Section: Chapter Questions
Problem 1TYU: When Griffith injected mice with a combination of live rough-strain and heat-killed smooth-strain...
Related questions
Question
Transcribed Image Text:6. In 1928, before DNA was recognized as the hereditary material, F Griffith performed a series
of experiments in which he infected the mice with two
different strains of pneumonia causing bacteria (S.
pneumonia): the S strain was smooth and virulent
(caused disease) and the R strain was rough and not
virulent (did not cause disease). Your supervisor provides
you with three unknown samples of S. pneumonia that
were stored by Griffith and labeled as “A", "B" and "C. He
then asks you to characterize these samples as virulent
and smooth or not virulent and rough. Not knowing what each sample contains, you decide to inject these
samples into mice both individually and in combination. You then obtain blood samples from these mice to look
for the type of bacteria. You also record whether the mice live or die and tabulate your data as follows.
Assuming that each sample contained only one type of bacterial strain in a pure form, what type of S.
pneumonia was in samples 'A', 'B' and 'C'? Provide an explanation for your each sample.
Set 1
Sample
injected
Response
of the mice
Type of strain recovered
from mice
1
Live
None
2
Live
Live R strain
3
C
Dead
Dead
Dead
Live S strain
Live R and live S strains
Live R and live S strains
4
A + B
B + C
6.
C + A
Dead
Live S strain
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Recommended textbooks for you
Biology (MindTap Course List)
Biology
ISBN:
9781337392938
Author:
Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:
Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:
9781305389892
Author:
Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:
Cengage Learning
Biology: The Unity and Diversity of Life (MindTap…
Biology
ISBN:
9781337408332
Author:
Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:
Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:
9781337392938
Author:
Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:
Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:
9781305389892
Author:
Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:
Cengage Learning
Biology: The Unity and Diversity of Life (MindTap…
Biology
ISBN:
9781337408332
Author:
Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:
Cengage Learning
Biology: The Unity and Diversity of Life (MindTap…
Biology
ISBN:
9781305073951
Author:
Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:
Cengage Learning