Ova and sperm cells differ from other body cells in that they carry half the usual number of chromosomes
Explanation
A human ova and a male sperm carry 23 chromosomes. This is to mean that human ova is haploid and a sperm is also haploid because they have 23 chromosomes. Due to meiosis, the resultant baby after fertilization will have 46 chromosomes in every somatic cell.
