What are recessive disorders?

Genetic term. Genetic disorders fall roughly into dominant and recessive based on inheritance. If only one parent has a gene (brown eyes) but all children have that trait, then it's dominant; recessive traits require that both parents have the gene (blue eyes). If each parent has only one gene with that trait, then 1/4 of the children will express the trait.

Related Questions

Could you tell me what happens in recessive disorders?

Depends. I am guessing that you want to understand the action of a recessive gene. Such a gene requires two copies to make a change. Eye color is a good example. Brown is dominant and if you get one brown and one blue gene your eyes will be brown. You need to get two blue genes, one from each parent, to have blue eyes. Read more...