They all have 6 in its outer shell because they are all in the same group in the periodic table. Your VERY VERY welcome (:
The paternal (blue) chromosomal and the maternal (pink) chromosome are homologous chromosomes. Following chromosomal replication, the blue chromosome is composed of two identical sister chromatids and the pink chromosome is composed of two identical sister chromatids.
How do Members of homologous pairs of chromosomes differ?   They have the same length and gene locus but differ in terms of alleles.   An allele is a form of a gene, differing from other alleles of the gene by a few bases at mâ¦ost and occupying the same locus as the other alleles of that gene.