What are the three different alleles, what is codominance, and because of the code dominant inheritance we actually have a couple different dominant alleles.

When you ask somebody their blood type they would generally say something like B+, O-, and so on. The bee Oro obviously have to do with the ABO blood types. But what about the + or – ? What does that stand for? The ABO and the Rh factor blood types are generally tested for at the same time but they they have anything to do with one another? For instance the genes that give rise to your ABO blood type are found on which chromosome? What about the Rh factor gene, where is it located? The ABO blood types are passed on through an inheritance called codominance. And the ABO blood types have three different alleles. What are the three different alleles, what is codominance, and because of the code dominant inheritance we actually have a couple different dominant alleles. Which of the ABO blood types would we consider the most dominant? Why? Which of the ABO blood types is the recessive characteristic? Looking at just the ABO blood type what does this tell us about how common dominant traits are versus how rare recessive traits can be? We might as well review some of our genetics from chapter 4 of AP1 since the ABO blood types lend us to such a review?Before the ability to DNA type blood or tissue fluids crime scene contaminants were type through what is called serology. What exactly is serology? How many ways can we actually type blood? Is it just ABO and Rh factor or are there other ways in which we can type blood? Explain how the ability to type blood in multiple ways dead to the ability to solve crimes using serology. Does anybody know in what criminal matter was DNA technology introduced to the population?