do you think mendels law of inheritance would have been different if the characters that he chosewere located on the same chromosome.

Dear student, 
​Please find below the solution to the asked query        

Yes, if the characters Mendel selected were located on the same chromosome then, his results and conclusions would have been different.
When alleles are present on the same chromosome, they have the tendency to show linkage (depending upon the distance between the two alleles). This phenomena would have led to different conclusions.  
Also, if the characters are present on the same chromosome, they would not have been segregated independently. 

Hope this information will clear your doubts about the topic.    Regards