What is the inheritance of the two traits?
Nail-patella syndrome - dominant
Blood Type - A and B codominant and each dominant to O
What type of cross are we looking at?
Similar to a test cross - OO ntpntp x BO Ntpntp
Are there uninformative crosses?
Yes - the cross between BO Ntpntp and AO ntpntp in generation II.
Are there any linkage associations noted?
Yes - alleles B and Ntp appear to be linked.
How many recombinants are in the pedigree?
3 are recombinants (see asteriks in above figure)
What is the percent recombination?
3/16 = 0.125