What Is Dog Breeding??
Dog Breeding is the practice of mating selected dogs with the intent to maintain or produce specific qualities and characteristics. There are many reasons to why people breed different types of dogs. For example, some people need a dog that can do a job, and not every dog can be trained to do certain jobs. In that case, they are left to create the perfect dog to get all of the necessary things done. |
Codominance occurs when two allels are equally dominant, and both appear in a phenotype. The classic example is human blood type, in which the A and B alleles are codominant, so anyone with both will have the phenotype AB.
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Incomplete dominance is a mixing of phenotypes, and the classic example of this is the crossing of a red snapdragon with a white snapdragon to produce a pink snapdragon; the phenotype is intermediate between the parents. |
In both instances, both alleles are expressed. How they're expressed is different. In incomplete dominance, the phenotype resembles a sort of blending of the two alleles. That is, if you have an allele for red petals and and allele for white petals, you end up getting pink petals with incomplete dominance. Codominance is when both alleles are expressed separately. Human blood type is a good example of this. The A and B alleles are both expressed, so you get the AB blood type. In the petal color example above, you'd get a flower with white and red splotches.
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