I found that question weird
Talked about how ABO and Rh were not linked so they were unlikely to be inherited together (marked two different chromosomes to indicated ABO blood group gene in one and Rh in the another)
ABO had 4 possible phenotypes (Punnet square of I^A,i x. I^B,i)
Rh shared a dominant recessive relationship as (Rr x. Rr ----> RR, Rr, Rr, rr)
Did not like the last question it was so open but I had, DNA fingerprinting and genome maps (included how recominant DNA was used to produced probes for flurorescent in situ hybridisation that allowed to find position in order to create genome maps.