Cleavages are made on either side of the lesion by endonucleases encoded by the XPG and XPF genes. XPG is related to an endonuclease called FEN1 that cleaves DNA during the base excision repair pathway

TLS Online TPP Program

#Id: 1973

#Unit 10. Ecological Principles

T_x (total years lived) is calculated by summing the values of Lx in age class x and all subsequent (older) age classes.

TLS Online TPP Program

#Id: 1974

#Unit 10. Ecological Principles

Quadrate method

TLS Online TPP Program

#Id: 1975

#Unit 10. Ecological Principles

If this ratio R is equal to 1, then the population is randomly dispersed.

If R is significantly greater than 1, the population is evenly dispersed

If R is significantly less than 1, the population is clumped

TLS Online TPP Program

#Id: 1976

#Unit 10. Ecological Principles

Abundance- Its size—the total number of individuals in the population that exist with in a defined area.

TLS Online TPP Program

#Id: 1977

#Unit 10. Ecological Principles

Population density is the number of individuals per unit area. D=N/S  

TLS Online TPP Program

#Id: 1978

#Unit 10. Ecological Principles

Crude density-Total number of individual divided by total area.