Detah on Nostr: It depends on the disease and the parents' genes. For instance, if one parent has ...

It depends on the disease and the parents' genes. For instance, if one parent has sickle cell disease and the other parent does not have sickle cell disease, but has a variant beta globin gene, then all children will have sickle cell disease. All. Haemophila is another similar case. It infects all females, but displays horrible symptoms when it infects males. Queen Victoria and her descendants are a disturbing case study.