Question

While working in a pathology lab, you are presented with an equine blood sample (2n=64) that is suspected to have a genetic abnormality. You decide to karyotype the sample and diagnose trisomy 30.

1. Assume two hypothetical genes A and B are located on chromosomes 29 and 30 respectively. How many alleles for each gene will be present in the Primary oocyte, secondary oocyte and ovum that produced the animal with the abnormal karyotype indicated above – Provide answers for all possible scenarios