A progeny is not a half clone of its parents.
- Each cell expresses both maternal and paternal genes. There are no parts of the body or even a cell for that matter that is identical to one of the parents.
- When haploid gametes form, chromosomes are randomly segregated. So the gamete receives either paternal and maternal chromosomes (grandparents of the "half clone") randomly. This technically means that the gamete is not an exact half of the parent's genome.
- During gameteogenesis (production of sperm/ovum), genetic recombination happens between nonsister chromatids of homologous chromosomes (meiotic crossover). This mechanism creates a small shuffle in the haploid genome that the gamete is carrying.
