We are experimenting with a small sprout of Brussels sprouts. Our plant has three, thick leaves, and is fairly short. The offspring of this plant will appear exactly like its parent but different in its own little way probably in the way the leaves are arrange. The offspring would get its traits when the parent produces its seeds. When the seeds are planted the cells inside begins meiosis. They begin to divide and grow. Brassica oleracea pass their genetics through the seeds they produce.
Offsprings will look similar but not exactly the same, because they inherit the parents genetics, but the living conditions could be different. They have there own set of genetic code in each seed. If we were to grow them next to each other for several generations they may mix genetically.I believe that the ancestral plant for our plant was grown in sightly different areas and over time it began to evolve to fit with their surroundings.