Inbreeding depression is the reduced survival and fertility of offspring of related individuals. Large effects are documented in wild animal and plant populations, as well as in humans.
Inbreeding depression stands for the inability of an organism to reproduce because of reduced fertility strength. The process leads to depreciated productivity. Inbreeding among same group in successive generation leads to the decreased productivity and fertility.
“Inbreeding depression is the reduction in the biological fitness of the individuals of a population as a result of inbreeding.
Explanation: Continued inbreeding, especially close inbreeding, usually reduces fertility and even productivity. This is called inbreeding depression. Whenever this becomes a problem, selected animals of the breeding population should be mated with unrelated animals of the same breed.
Inbreeding depression - the reduced survival and fertility of offspring of related individuals - occurs in wild animal and plant populations as well as in humans, indicating that genetic variation in fitness traits exists in natural populations.Oct 14, 2019
Inbreeding depression occurs because species contain a load of rare harmful partially recessive alleles due to mutation-selection balance, and because some loci exhibit heterozygote advantage. Inbreeding increases homozygosity at these loci exposing harmful recessive alleles in homozygotes.
Heterosis, also known as hybrid vigor, is the enhancement of characteristics in the offspring. Inbreeding depression is a reduction in fitness in the offspring as a result of inbreeding. It occurs as a result of cross between two genetically different parents.
Inbreeding is the production of offspring from the breeding of organisms that are related genetically. The significance of inbreeding are- It increases the frequency of pairing of similar genes. It enables the breeder to find out and eliminate harmful recessive genes within the population.
Inbreeding is done to develop purelines. It increases the homozygosity and helps in the accumulation of superior genes. Inbreeding also helps in eliminating less desirable genes.
The best method to overcome inbreeding depression is Out-crossing. It is a practice of mating animals of the same breed, that have no common ancestors on either side of their pedigree up to 4-6 generations. The offspring is known as an out-cross.