What are the genetic dangers of inbreeding?

Answer 1

When two closely related individuals reproduce, there is more chance of their recessive genes combining and being shown into the individual's pheno type. When the two individuals are not so much related, their recessive genes will cancel out by their dominant genes. thus the offspring will have all the dominant genes which are very likely to be health. But in case of breeding between closely related individuals, they will have higher possibilites of carrying very similar genes. And in this case, the similar genes might be bad on the phenotype. And most cases, the recessive genes that were not apparent in the parent generation will phenotypize by combining due to these inbreeding. thus there are more chance that the offspring will come up with two recessive allelles that are defective and cause some kind of an illness or deformity.

Answer 2

Every animal, no matter how phenotypically 'perfect' is very likely to be carrying deleterious genes. Inbreeding greatly increases the chances of having the same alleles at a loci - thus hugely increasing the chances of genetic disorders.

Inbreeding usually has the strongest affects on reproductive and viability traits - and is never advisable.

Answer 3

That recessive and deleterious traits would be expressed more often by inbreeding than out breeding. Say you have a deleterious, recessive trait in your family. We will call it d, for deleterious. D is not deleterious and dominant.

Inbreeding:

Dd X Dd

===================== no expression of the trait, though carriers are created

Answer 4

In humans - there are many moral and biological problems associated with inbreeding.

In animals, inbreeding reduces genetic diversity (which reduces variation and evolutionary potential), and dramatically increases the chances of disorders.

Answer 5

Inbreeding weakens a species' gene pool. Genetically related individuals will produce offspring genetically similar to themselves, and if those offspring also inbreed, the trend continues. The genetic diversity that results from breeding with others who aren't related is a good thing: if a plague, natural disaster, sudden climate change, or arrival of a new predator threatens a species, genetic diversity makes it more likely that some individuals exist who can adapt to the change.

Answer 6

Inbreeding can increase the likelihood of genetic disorders and birth defects due to the concentration of harmful recessive genes. It can also reduce genetic diversity, making populations more vulnerable to diseases and environmental changes. Inbreeding depression can lead to decreased fitness and reproductive success in offspring.

Answer 7

Some of the risks include blindness and joint deformites in the child.

Answer 8

Deleterious mutations and single gene diseases can be expressed much more readily without being masked by dominant genes of normal trait expression.

Answer 9

When humans/animals interbreed with one another, mutations in the DNA occur, which leads to deformities in the newborn, if the foetus survives.