20. What does the law of independent assortment refer to?
This only shows up in a dihybrid cross, where two different traits (each allelic) , not located on the same chromosome, are free to assort themselves in the gamete. The fate of one non allele does not effect the fate of another non allele.
Non alleles will separate independently from each other to end up one of each kind in a gamete. Non alleles are genes which are not coding for the same trait, such as a gene for height and gene for blood type.
If we determine the gametes for a parent which is AaBb they would be the following:
AB, Ab, aB, ab