What question did this study set out to answer?

To elucidate the genetic mechanisms governing resistance to ultraviolet radiation and x-rays in Escherichia coli.

November 1, 1948GeneticsOpen Access

Genetics of Resistance to Radiation in Escherichia Coli

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Authors

EWEvelyn M. WitkinRutgers, The State University of New Jersey

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Implication

Experimental study demonstrates spontaneous mutations driving radiation resistance in Escherichia coli, indicating gene-controlled bacterial heredity analogous to higher organisms.

Key Points

To elucidate the genetic mechanisms governing resistance to ultraviolet radiation and x-rays in Escherichia coli.
Analyzed the emergence and transmission of radiation resistance across bacterial generations in Escherichia coli cultures.
Evaluated spontaneous versus induced variations using exposure to ultraviolet radiation, x-rays, and chemical mutagens.
Compared bacterial inheritance patterns to established Mendelian principles described in higher plants and animals.
Heightened resistance to ultraviolet radiation and x-rays arises via stable, heritable spontaneous mutations in parental cultures.
Mutations conferring radiation resistance are transmitted unchanged across successive generations, exhibiting discrete and independent genetic variation.
Physical agents such as ultraviolet light and x-rays elevate bacterial mutation rates in a manner consistent with mutagenesis in higher organisms.

Cite This Study

Evelyn M. Witkin (1948) studied this question.

synapsesocial.com/papers/6a6fc2bda528af2d65c327b7 https://doi.org/10.1093/genetics/32.3.221

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November 1, 1948GeneticsOpen Access

Genetics of Resistance to Radiation in Escherichia Coli

View Full Paper

Ask AI

Bookmark

Authors

EWEvelyn M. WitkinRutgers, The State University of New Jersey

Discussion

Member takes

Implication

Experimental study demonstrates spontaneous mutations driving radiation resistance in Escherichia coli, indicating gene-controlled bacterial heredity analogous to higher organisms.

Key Points

To elucidate the genetic mechanisms governing resistance to ultraviolet radiation and x-rays in Escherichia coli.
Analyzed the emergence and transmission of radiation resistance across bacterial generations in Escherichia coli cultures.
Evaluated spontaneous versus induced variations using exposure to ultraviolet radiation, x-rays, and chemical mutagens.
Compared bacterial inheritance patterns to established Mendelian principles described in higher plants and animals.
Heightened resistance to ultraviolet radiation and x-rays arises via stable, heritable spontaneous mutations in parental cultures.
Mutations conferring radiation resistance are transmitted unchanged across successive generations, exhibiting discrete and independent genetic variation.
Physical agents such as ultraviolet light and x-rays elevate bacterial mutation rates in a manner consistent with mutagenesis in higher organisms.

Cite This Study

Evelyn M. Witkin (1948) studied this question.

synapsesocial.com/papers/6a6fc2bda528af2d65c327b7 https://doi.org/10.1093/genetics/32.3.221

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