Ultraviolet light induces the formation of a cyclobutane ring between adjacent thymines

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#Unit 8. Inheritance Biology

Auxotrophs or Mutant bacterial strains can be isolated on the basis of their nutritional requirements.

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#Unit 8. Inheritance Biology

Plasmid Small, circular DNA molecule found in bacterial cells that is capable of replicating independently from the bacterial chromosome.

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#Unit 8. Inheritance Biology

Episome Plasmid capable of integrating into a bacterial chromosome.

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#Unit 8. Inheritance Biology

F (fertility) factor Episome of E. coli that controls conjugation and gene exchange between cells.

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#Unit 8. Inheritance Biology

F⁺ Present as separate circular plasmid

F⁻ Absent

Hfr Present, integrated into bacterial chromosome

F′ Present as separate circular plasmid, carrying some bacterial genes

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#Unit 8. Inheritance Biology