ANS 3384

Problem Set 2



Blood Type Analyses

A System B System F-V System R-S System Z-System
A1D

A2D



A1H



D

 Ox8



01



0xQI'



PI'



B2G

 F



V

 R



S

 X



Z





Which bull is the Sire?

Set I
Bull A

Bull B



Dam 1





Calf 1



Calf 2



Calf 3









Bull C



Bull D



Dam 2





Calf 1



Calf 2



Calf 3

 A1D/A2D



A2D/D



A1H/D





A2D/D



A1H/A2D



A1H/D





Set II



A1D/A1D



A1D/A1H



A2D/A1H





A1D/A2D



A1H/A2D



A2D/A1D

 O1/PI'



Ox8/B2G



OxQI'/PI'





OxQI'/PI'



Ox8/PI'



O1/Ox8









O1/B2G



Ox8/PI'



Ox8/B2G





O1/B2G



Ox8/Ox8



Ox8/B2G

 F/F



F/V



F/V





F/V



V/V



V/V









F/V



F/V



V/V





F/V



F/V



V/V

 R/S



R/R



R/S





R/S



R/S



R/R









R/R



R/R



R/S





R/R



R/S



R/R

 X/X



X/Z



Z/Z





X/Z



Z/Z



X/Z









X/Z



X/Z



X/Z





Z/Z



X/X



X/Z



ANSWERS TO PROBLEM SET 2



Set I



Calf 1. The B system indicates that Bull B cannot be the sire of the calf. Since the OxOI' factor must come from the dam, the sire must supply PI', which only bull A possesses.



Calf 2. Bull B is indicated as the sire as Bull A is excluded due to systems B, F-V and Z.



Calf 3. Since Dam 1 cannot be the dam of the calf (on the basis of the B system), there is no need to know the sire of the calf. However, Bull A cannot be the sire of the calf due to the F-V system and the A system. In this case the cow must have switched calves with another cow at calving. It also could be an ET calf.







Set II



Calf 1. Bull C must be the sire (D is excluded) due to the B system.



Calf 2. Both the A and B systems exclude Bull C from being the sire, thus D is indicated as the sire.



Calf 3. Either bull C or D could be the sire; it is impossible to exclude either bull based on the information given.