A sperm from the male horse contains 32 chromosomes. It combines with the 32 chromosomes of a female egg. Egg + Sperm = new individual (64) All the resulting cells have 64 chromosomes due to mitosis of the zygote formed from fertilization.perm and egg cells always contain half the number of total chromosomes in the organism. Remember, since they are produced through meiosis, gametes (sperm and egg cells) will always have half the number of total chromosomes in the organism. Source(s): darkcatalyst_08 · 7 years ago.