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Breeding mother and daughter

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Discussion in ' Goat Frenzy ' started by Itchysmom , Nov 7, Log in or Sign up. Nov 7, 1. I know, I am thinking too much today! I know you can breed father to daughter with little to no problems, but can you breed mother to son? My does are a breeding of father to daughter and they are nice. I hear this done all the time Why is this not done? Does this cross have problems? Itchysmom , Nov 7,
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By Jack Wright For Mailonline. However, the court heard how the pair continued to advertise dogs and puppies for sale without a licence, using a variety of other people's names instead of their own. They came to the attention of licensing chiefs again in June after a helpless miniature Dachshund which had contracted CPV died. Puppy breeders are required to acquire a licence from their local authority stock. In the UK, puppy breeders need to have a licence if they breed three or more litters in a year or five if they are in Scotland. Similar laws govern puppy farming in Wales, Scotland, and Norther Ireland. Southampton Crown Court heard how the criminal enterprise was in operation at Woodward farm, in Upham, between and Lucinda and Victoria knew of some of these people, Mr Crorie claimed, adding there were no records of sales of receipts, and no tax records. Jonathan Underhill said both Rolphs were adamant there had 'never been any suggestion of mistreatment' of the animals. Canine parvovirus CPV is a contagious disease mainly affecting dogs, though it can infect other mammals including foxes, wolves, cats, and even skunks.
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Here is my question—"Is there more chance of genetic flaws, undesirable diseases, etc. What an interesting question. As someone who focuses mostly on people, I never really thought about incest in this way before. After a bit of thought, the quick answer is that there would for sure be no difference for the male pups. The answer is a bit less clear for the female pups. Still after playing around with some diagrams, it looks like the same seems to be true for female pups as well.

I am not sure I expected that to be true. Inbreeding causes problems because of something called recessive alleles. Basically these are versions of genes that cause disease or an undesirable trait if a pup gets one from both mom and dad. There are usually no issues if a pup has just one of them. Scientists currently think that people have around of these silent alleles lurking in their DNA and if anything, there are probably more in dogs. Unrelated dogs will have different sets of these disease genes although there can be overlap, especially in similar breeds.

The risk for inbreeding comes from the fact that the parents are more likely to share the same set of these hidden genes because they are related. Inbreeding only means an increased risk for a genetic disease. Our genes are stored on long pieces of DNA called chromosomes. Dogs have 39 pairs of chromosomes with one of each pair coming from mom and the other from dad. For the most part, each chromosome has the same set of genes.

What makes each dog unique is the individual set of different gene versions scattered across these chromosomes. Inbreeding is a problem because parts of both chromosomes in a pair carry the exact same set of gene versions. Males have an X and a Y chromosome which are very different from one another. The X chromosome is a giant chock full of genes while the Y is this puny thing with just a few genes that can turn a mammal into a male.

Closely related parents will not affect the X for male pups although the other 38 pairs are still an issue. Of course what this also means is that males are always at a higher risk for these X-linked diseases. This is why men are more likely to have hemophilia and be colorblind.

And why male dogs are more likely to have hemophilia too. It takes just one bad gene on their single X chromosome to cause problems for male dogs and people. They will get whatever disease mom passes to them. But none of this is true for female pups.

They have two X chromosomes that have the same set of genes and so can potentially have inbreeding issues with the X. Now the question is whether it matters if their parents are mother and son or father and daughter. As I said earlier, when parents have a child, they pass one chromosome from each pair down to the child. For dogs this means mom passes down 39 chromosomes and so does dad with end result being 78 in total. The chromosome that is passed down is chosen at random. Here is what this looks like for just the XY pair:.

Mom has a black and an orange X and dad has a green X and a black Y. Below the two of them are the four possible pups. The first female pup got a black X from mom and a green X from dad. Before seeing what happens with inbreeding, we need to add one more wrinkle to all of this. In reality what happens is that there is mixing between like chromosomes in a pair before they are passed on. What this means is that there are really many more than four possible combinations. Here is what one pairing might actually look like:.

Here is what these pairings might look like:. At the top I have kept the original mating. Of course it matters for the rest of his chromosomes! Admittedly this is just one outcome but you can see that in each case about half of their X overlaps. It all has to do with how the DNA happened to get swapped. So neither is the safer route and both should have the same set of issues.

Of course, the inbreeding issues for these female pups would be for diseases that already affect the male pups! By Dr. Barry Starr, Stanford University. Genes are stored on chromosomes.

Humans have 46 while dogs have The Tech Interactive S. Market St. San Jose, CA Federal ID Its content is solely the responsibility of the authors and does not necessarily represent the official views of Stanford University or the Department of Genetics. The Tech Interactive. Back to Relatedness. February 12, What an interesting question. Inbreeding Problems Inbreeding causes problems because of something called recessive alleles. Here is what this looks like for just the XY pair: Mom has a black and an orange X and dad has a green X and a black Y.

Here is what these pairings might look like: At the top I have kept the original mating. More Information Families of close relatives Inbreeding and new chromosome numbers Additional effects of inbreeding More on recombination. Search Ask a Geneticist. Volver a la lista de Preguntas. Privacy Policy Disclaimer Our Mission.



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