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Question

Which of the following is true with reference to transformation in bacteria
i) Transfer of genetic material is mediated by F factor
ii) Uptake of DNA fragments from the surrounding environment and expression of that genetic information in recipient cell
iii) Transformation experiments were the basis to propose chromosomal theory of inheritance
iv) Transformation was discovered by Griffith in Streptococcus pneumonia

A
i, iv
B
ii, iii, iv
C
ii, iv
D
iii, iv
Solution
Verified by Toppr

Correct option is D. ii, iv

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Similar Questions
Q1
Which of the following is true with reference to transformation in bacteria
i) Transfer of genetic material is mediated by F factor
ii) Uptake of DNA fragments from the surrounding environment and expression of that genetic information in recipient cell
iii) Transformation experiments were the basis to propose chromosomal theory of inheritance
iv) Transformation was discovered by Griffith in Streptococcus pneumonia
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Q2
Which of the following is the true reference to transformation in bacteria?
(I) Transfer of genetic material is mediated by 'F' factor.
(II) Uptake of naked DNA fragments from surrounding environment and the expression of that genetic information in the recipient cell.
(III) Transformation experiments were the basis to propose the chromosomal theory of inheritance.
(IV) Transformation was discovered by Frederick Griffith in Streptococcus pneumoniae.
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Q3
What is Griffith transforming principle ? Explain Griffith experiments on streptococcus pneumoniae while searching for genetic material.
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Q4
Frederick Griffith accidentally discovered transformation when attempting to
develop a vaccine for pneumonia. He injected mice with samples from S strain
(virulent) and/or R strain (non-virulent) pneumococcal bacteria (Streptococcus
pneumoniae). Which of the following results is NOT consistent with Griffith's
experiments?
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Q5
Recall the experiments done by Frederick Griffith, Avery, MacLeod and McCarty, where DNA was speculated to be the genetic material. If RNA, instead of DNA, was the genetic material, would the heat killed strain of Pneumococcus have transformed the R-strain into virulent strain? Explain.
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