in figure 1.8 the chromosome carrying allele A and the one carrying allele B move to the same pole while the chromosome carrying allele a and the one carrying allele b move to the opposite pole. call 1 therefore contains the allele A and B while cell 2 contains the allele a and b. due to the orientation of homologous in figure 1.8 cell 3 contains the allele A and B whereas cell 4 contains the alleles a and B.