The mark-recapture technique is that after the tagged animals are released, they mix freely with unmarked individuals. The population is resampled and the numbers of marked and unmarked individuals are recorded. 

TLS Online TPP Program

#Id: 9213

#XL - T Zoology

Probability of being heterozygote in given population

H = 1 - 1/2N

TLS Online TPP Program

#Id: 9214

#XL - T Zoology

Effective population size(Ne)

Effective number of breeding adults in a population.

TLS Online TPP Program

#Id: 9215

#XL - T Zoology

Some factor determine Ne

1.Sex ratio.

2.Variation between individual in reproduction success.

3.Fluctuation in population size.

4.The age structure of the population.

5.Mating is random.

TLS Online TPP Program

#Id: 9216

#XL - T Zoology

Ne = Male + Female  (when both are equal)

Ne = 4 × n(male) × n(female)/n(male)+n(female) 

(When both unequal Ne is smaller than then sum of both)

TLS Online TPP Program

#Id: 4685

#XL - T Zoology

Social behaviour includes all kind of interaction between individuals of the same species.

TLS Online TPP Program

#Id: 4686

#XL - T Zoology

Interactions are classified by how they affect the fitnesses of the two individuals.