BIODIVERSITY

LOSS OF BIODIVERSITY
Loss of biodiversity due to any reason at any level affect the diversity of the other level because the all the levels of the biodiversity intimately interlink with each other.
GENETIC DIVERSITY
LOSS OF GENETIC DIVERSITY
Loss of  genetic diversity due to any stress it may be a natural or may be a artificial stress which causes of the loss of the genetic diversity.
If any specie or any individual is loss its genetic diversity also loss.If a major population due to any stress fragmented into small populations. In other words we also said that the gene pool of the major population into small gene paddles.
These small fragmented population has small variety of genes and can not survive as this small population extinct the genetic diversity of this small population also loss.
FACTORS OF GENETIC DIVERSITY LOSS
There are 4 factors to loss of the genetic diversity

• Founder's Effect
• Demographic Bottleneck
• Genetic Drift
• Inbreeding Depression

Founder Effect:-
Loss of genetic diversity due to extinction of founders is known as Founder's effect.
Few individuals from a major population separated and form its new population.
These small founder's population  has genes of the major population and some of its own new gene.So due to this the new genes are also known as Biased.And if  these new populations with new genes can not survive and population extinct and as the population extinct the genetic diversity loss.
Demographic Bottleneck:-
If a major population  due to any stress face a sudden decline and population reduce in size and this small population is known as the bottleneck.
The survival rate of this small size or bottleneck population depend upon 4 factors

• Size of Bottleneck  population
• Reproductive rate
• Growth rate
• Adaptive Ability

More adaptive ability more heterozygosity within the individual and best fit to environment.
Genetic Drift:-
Loss of allel or gene of a small isolated population is known as the genetic drift.
Inbreeding depression:-
Breeding between the individual of the same ancestors is known as the inbreeding.
Inbreeding mean homozygosity and an homozygosit individual has some character e.g.
An homozygot individual is

• Less vigor
• Weak
• Non-adaptive
• Deformities or abnormalities
• Less fertile 
• Less growth rate

These character cause due to homozygosity and homozygosity occur due to inbreeding.
Due to homozygosity these is loss in gene or genetic diversity.
These are the some factors of loss of the genetic diversity.