What DNA does a self-fertile plant's seedling have?

Question

Some plants are said to be `self-fertile`. An example is `Prunus tomentosa`. Assuming that no cross-pollination happened with other plants, if a self-fertile plant such as `prunus tomentosa` produces a seedling, what DNA will the seedling have? Is the seedling's DNA an exact copy of the parent plant's DNA, or do the genes get rearranged?

Answer 1

There will still be meiosis to produce eggs and sperm. Because of the random exchange of DNA between chromosomes, and then the random separation of the pairs of homologous chromosomes, each gamete will be different. Self-fertilization will still produce genetically unique plants, just with a smaller pool of possible alleles.