The enzymes DNA gyrase, which introduces negative supercoils into DNA, and DNA topoisomerase I, which removes negative supercoils in DNA, are required to prevent topological stresses from building up in the course of transcription and replication. 

TLS Online TPP Program

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#Unit 10. Ecological Principles

India Forest 1968

TLS Online TPP Program

#Id: 6074

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 6075

#Unit 10. Ecological Principles

Loss of Biodiversity 

Direct ways: Deforestation, hunting, poaching, commercial exploitation.

Indirect ways: Loss or modification of the natural habitats, introduction of exotic species, pollution, etc.

Natural causes - Climate change

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#Id: 6076

#Unit 10. Ecological Principles

Extinctions are most caused by introduced species and 

TLS Online TPP Program

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#Unit 10. Ecological Principles

Vulnerability to extinction can be linked to species characteristics

TLS Online TPP Program

#Id: 6078

#Unit 10. Ecological Principles