A Robertsonian translocation is considered non-reciprocal because . View Available Hint(s) A Robertsonian translocation is considered non-reciprocal because . trisomies of chromosome 21 are viable, whereas monosomies of the same chromosome are not for every viable gamete formed, there are two inviable gametes formed an uneven number of gametes is produced in each meiosis the smaller of the two reciprocal products of translocated chromosomes is lost