Basically there are only 2 unique different allele combinations that this organism can produce in their gametes for these traits. They are AB and Ab.
An element's atomic number is the amount of protons (positively charge subatomic particle found in the atoms nucleus) present in one atom of that element.
The offspring received one allele from each parent. The alleles were separated during gamete formation before they were passed to the offspring
Atoms, Molecules, Cells, Tissues, Organs, Organ system are all building blocks to growing an organism. Hope this helps. :)
Chromatids......then chromosome !!!