Well this really depends on if the father is homozygous or heterozygous for type A.
But lets say he is homozygous for right now. That mean if he were to produce offspring with a type O women then all of there offspring would be heterozygous for type A.
If the father was heterozygous for type A and he produced with the same type O mother then the offspring would be either type O or heterozygous type A. In this case there is a 50% chance either way.
Hope this makes sense(;
1. During DNA elongation, polymerase enzyme adds new, free nucleotides to the three prime end of the newly forming strand, elongating it in five prime to three prime direction while the telomerase protects the important genes at the end of the chromosome from been deleted as the DNA strand shorten during DNA elongation.
2. During DNA elongation, helicase enzyme separates the double stranded DNA into single strand by melting the hydrogen bond that holds the DNA molecule together thus enabling each strand to be copied while the telomerase acts by preventing the telomere from been deleted during elongation.
It would be the pubis bone.