help to avoid "inbreeding"

[MissPrissy]

halo, sometimes it is just that simple. Things are not always so complicated.

I have explained it as best and as simply as I can.

Maybe someone else can turn the light on for you.

 

[halo]

Quote:
I dont think thats a good argument, because I would think you could get the same results with non-related mice. If you breed a mouse w/ Parkinson to a mouse without, then half the offspring would have Parkinsons. If you then breed those girl mice with Parkinsons to any boy mouse with Parkinsons, then all offspring will have Parkinsons. That to me just shows the genetics with Parkinsons, that it is 100% heritable with 2 carriers, if Im understanding this correctly. Which I may not be.

I love genetics, but it gives me a headache....

 

[kinnip]

There was lengthy discussion on linebreeding not long ago. I'm sure it wouldn't be hard to find. I will have to breed my goats and possibly my Marans back to their parents for a year or two. Once I can buy some new breeders, I'll start a linebreeding program. Until then, all I can do is cull ruthlessly. I have a couple of Andalusians from Ideal that I'd like to breed, but I have no way of knowing whether they are related. I guess I'll notice when I hatch the world's ugliest chick.

 

[the1much]

Quote:
I dont think thats a good argument, because I would think you could get the same results with non-related mice. If you breed a mouse w/ Parkinson to a mouse without, then half the offspring would have Parkinsons. If you then breed those girl mice with Parkinsons to any boy mouse with Parkinsons, then all offspring will have Parkinsons. That to me just shows the genetics with Parkinsons, that it is 100% heritable with 2 carriers, if Im understanding this correctly. Which I may not be.

I love genetics, but it gives me a headache....

your forgetting about recessive genes,,, the ONLY way to get a "perfect" (traits that you need) is to breed dad/daughter. i worked with people that know genetics BETTER then they know themselves,, we would breed MILLIONS of mice a day,, and this is the ONLY way of doing it and being SURE of what is gonna come out.

 

[halo]

Millions of mice a day?? Millions??

 

[the1much]

Quote:
yup MILLIONS a day

edit: look up the "jackson laboratory" in bar harbor maine

http://www.jax.org/

 

[Ladyhawke1]

Quote:
yup MILLIONS a day

edit: look up the "jackson laboratory" in bar harbor maine

http://www.jax.org/

Speaking of genetics……….this obtuse questioning of someone's genuine real time experience is a good reason why cousins should not marry.

 

[Clay In Iowa]

Quote:
I must be dense, because I still don't get it. Number one, if I were improving my flock, I wouldnt be breeding, for example, a wrong eye color back into the flock. That would be culled. In breeding a brother/sister, you don't know what genetic dna has been passed on to each from the father/mother. Just because they are brother/sister, doesnt mean they are cloned. If you hatch out 20 eggs from a roo and a hen, odds are you'll have 20 different looking babies, unless from a inbred line already. I don't mean to be argumentative, I just think this isnt as simplistic as its made out to be.

I hope the genetics guru chimes in here.

I must be dense as well and I have a degree in molecular genetics. Any form of inbreeding has the potential to turn out very bad. Mother/son, father/daughter, brother/sister matings all have risks. The risk of a build up of recessive genes in the population goes up drastically with related matings.

To breed traits in or out usually takes generations of careful back crossing. That is you breed distant relatives to enhance the trait of interest in the gene pool. Distant in this case usually means offspring separated by at least 2, preferably 3 or 4, matings with no common parentage.

But then birds area a strange brew genetically and I'm not an expert in avian genes. I guess on this one I'll go with hard data from breeders and dump the $50,000 education.

Still doesn't make since to me.

 

[gritsar]

Quote:
ut hum

 

[Clay In Iowa]

BUSTED