I wonder if there may be two issues here, one related to consistency and one related to twins. That is, you may not need twins to get differing results, but bei

I wonder if there may be two issues here, one related to consistency and one related to twins. That is, you may not need twins to get differing results, but being twins may still be one of the reasons for differing results. I'm not a biologist, but apparently it's not the case that twins have exactly identical DNA: "Identical Twins' Genes Are Not Identical" ( https://www.scientificamerican.com/article/identical-twins-genes-are-not-identical/ https://www.scientificamerican.com/article/identical-twins-g... )