Final answer:
None of the karyotypes listed in the question exhibit euploidy, which in humans corresponds to 22 pairs of autosomes and one pair of sex chromosomes, either XX or XY. The listed karyotypes represent other conditions such as triploidy and forms of monosomy and trisomy, which all fall under aneuploidy.
Step-by-step explanation:
The question asks which of the human karyotypes exhibit euploidy. Euploidy is a state where an individual has the appropriate number of chromosomes for their species. In humans, this corresponds to 22 pairs of autosomes and one pair of sex chromosomes, which would be either XX for females or XY for males.
The options given in the question are a) 69, XXX, b) 47, XX, + 13, c) 45, XO. The correct answer to which of those exhibits euploidy is e) None of the above. Option a) is a form of triploidy, which is not euploidy. Option b) represents a state of trisomy with an extra chromosome 13, and option c) corresponds to Turner syndrome, which is a form of monosomy with a single X chromosome.