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What is the real difference between co-dominance and incomplete dominance in genetics?

What is the real difference between co-dominance and incomplete dominance in genetics? Topic: Aa research articles
May 22, 2019 / By Alisya
Question: I'm a little confused as to what the actual difference is. Is it simply that co-dominance gives you two traits showing through (as in a roan horse) and incomplete is a mix of traits (like a pink flower from red and white parents)? I'm also a little confused about the whole roan horse deal and similar cases. How can you get two different traits showing through when the genotype is the same in all the cells. A horse's genome can tell it to produce red or gray coloration, but not both at the same time...? My best guess is that it would have something to do with the methylation pattern, but that wouldn't be genetic so much as epigenetic. Mendel and others would not have known about this in their day, so what's going on? Please be thorough and you WILL get your points. Thanks much!
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Best Answers: What is the real difference between co-dominance and incomplete dominance in genetics?

Uri Uri | 2 days ago
You are right, there is none. It just helps some people to categorize it and have separate definitions. In fact, my advisor actually just uses incomplete dominance. I'll even tell you that when you start looking at things in detail, there is often no such thing as complete dominance (e.g. AA = 1, Aa = 0.99, aa = 0). I tried to do some research on roan colouring. The best that I can understand is that it is just the same as any spotting mechanism, it just happens that the distribution isn't as clustered. Unfortunately, I don't know much about how spotting or any pattern formation works. However, my assumption would be that expression in individual cells aren't independent, but rather interact with neighbouring cells. Sorry can't give you a full answer :( I'm a breeder which means I care about the genetics and the effects, but the physiology in between is a black box! Edit: Ok I think I may have figured it out (to the best of my interpretation): http://www.sciencedirect.com/science/art... Roaning is caused by a defective KIT gene. This is apparently involved in melanocyte migration. Melantocytes don't go where they are supposed to (i.e. hair follicles); of course they still migrate randomly, which means they sometimes get to their spot and produce coloured follicles; but when they don't you get the white. Overall, causing roaning!
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Uri Originally Answered: Pulling on the lead/dominance theory. How do we know its true?
Whoa please..., You are combining many parcels on untruths here to attempt to arrive at an invalid conclusion. There is no way to answer a dominance/submissive dog behavior theory question like this in the limitations of DS - it is a whole stand-alone scientific discipline. Dog instinctive behavior is not speculative, it is actually studied and observed - it proves true and repeatable across all dogs by scientific method. Successful trainers and successful owners may not know the specifics, but they do recognize and USE natural instinctive behavior to train a dog to WANT to do what his leader wants done all the time. Surely, you agree that dogs are pack animals and are most comfortable with an assertive (very different word than AGGRESSIVE), wise, consistent leader, correct? Now to address your 'dog pulling on leash is not dominance' analogy, you teach your dog to WANT to do what YOU want him to do. Apparently he understands you WANT him to always pull. You have chosen one of 2 leash behaviors which are dominant over you - one is 'drag the dog' and the other is 'drag the human'. Your dog has learned you want him to 'drag the human' and that is total dominant/submissive behavior you both participate in.during your walks. You can teach other methods of leash behavior too such as loose leash heeling. If you want to know how to do that, ask in another question and I will give you the step by step basics. There are also off-leash training, seeing-eye dog leash training, etc. etc. To tie your supposition together from pulling on the leash to dominate behavior - you have reached an invalid conclusion, that being there is nothing dominant about the pulling. I will posit that pulling you on the leash is total dominance. Here is my evidence that my conclusion is true. Have you ever studied puppies playing puppy games? Two games significant to this discussion is "tuggy-toy", and "run-together-holding-the-same-stick". These are games, of course, and are not games of survival and are not games of procreation, but games of dominance. In 'tuggy-toy' pups are practicing how do exert dominance. The pup who finally pulls the toy away from the other pup is the winner of the game and is dominant. In "run together holding the same stick" the pup who directs the path of the run is the winner of the game and is dominant. Key to understanding this dominance play is that BOTH pups (whether dominant or submissive) are having a wonderful happy time playing together! Now you go ahead and reason out how tuggy-toy or run-together-holding-the-same-stick play in puppies transfers directly to leash pulling and dominance/submissive behavior with you and your dog on a walk, ok? If you can do that, you will see my point is true. Just because you do not understand something, is no reason to claim something is not true. This is only a tiny morsel of real scientific research on canine behavior. Fortunately for you, you can observe it 24/7 right under your nose with your own dog. If you watch closely and with an open mind, you will see your dog is talking to you loudly every day with every single movement and function and action he has available to him. He does not have speech capabilities, but he uses everything else in his power to talk to you constantly. If you do get into this mind-focus on your animals behavior, you will learn to respect your dog for just being a dog. And you will also begin to laugh hysterically when you see DS questions like "Why is my dog suddenly pooping on my pillow. HELP!! Yup, dogs always communicate with you however they can get your attention........ha ha ha ha! Again, if you would like to learn an alternative to the dominant/submissive leash walking you have taught your dog to WANT to do for you, just ask another question "How do I teach my dog to walk loose leash". Good question with good discussion.! Good Luck
Uri Originally Answered: Pulling on the lead/dominance theory. How do we know its true?
Its nonsense, same as saying letting the dog out of the door first leads to dominance issues. A dog is either trained or its not. Dogs are never trying to buck the system and make their way to the top since even WOLVES don't do that. if the tail is wagging the dog as they say, its because the owner has not been clear and consistent with their rules and boundaries and the dogs know they can get away with X because the owner lets them. Rank in wolves is pretty much an old theory that's been throw in the bin, because as people now know, wolf packs are nothing more than parents, older offspring who have yet to break off their own parents and that seasons' pup. The bulk of pack theory and dominance is based on CAPTIVE wolf study, where odds are very few of the wolves in that pack are actually related. The majority of captive and released packs are groups of adolescent and adult animals put into a grouping that would rarely happen in nature at least when speaking about wolves. Crazy Cat lady: go read up on David Mech. This is one of the people who STARTED this line of thinking and over the years through more research and observation, realized his original theory was in fact WRONG. http://www.wolf.org/wolves/learn/basic/r... give this a read.

Robin Robin
imagine a scenario,in this scenario 2 frogs mate one is red and the other is blue and there child would be a mix of white and blue IF it were co-dominance. IF their kid is green that would be incomplete dominance
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Micha Micha
if u want to know wat is co-dominance... go for an example.. our blood grouping is the best example... genes for blood grouping.. Ia, Ib, Io [note a ,b, c should be down] here Ia & Ib are dominant while the othere is recessive.... l so the foiling allile pairs are possible.... IaIa - A group IaI0 - A group IbIb - B group IbI0 - B group IaIb - here as both r dominant both the characters are expressed... so AB group is formed..... this it the best example for co- dominance... ---------------------------------------... for in complete dominance the dominant gene does't properly dominate.... so even though the dominant gene is there it is not properly expressed.... as in dog flower plant.... understood ??? u can contact me for further details....... [email protected]
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Micha Originally Answered: What is the male/female dominance of Christianity and Buddhism and what are the similarities and differences?
sounds like an assignment....get a comparative relig book in library....we all know about our own beliefs... that was an ancient world....Nowadays women can preach in the Methodist church..

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