Final answer:
The ES cells that are generated in such experiments are triploid, that is, they have three copies of each chromosome-one from the oocyte and two from the sperm.
Step-by-step explanation:
The ES cells that are generated in such experiments are triploid, that is, they have three copies of each chromosome-one from the oocyte and two from the sperm.
In sexual reproduction, the egg and sperm fuse to form a diploid zygote with two sets of chromosomes, one from each parent. However, in some experiments, when the oocyte is fertilized by two sperm, an abnormal triploid zygote is formed.