Like OHFarmerswife said, yes it can be a genetic issue but there can be other causes of it too that may not mean your hen has a genetic defect. Incorrect temperature during incubation (if she wasn't hatched under a broody) is a common cause. I've also read that riboflavin deficiencies in the parent birds can cause toe problems as well as chicks raised on wire may develop this condition.
I have a hen with badly curled toes on both feet- when I got her she was too old to correct it. I did test hatch a couple of her eggs to see if this was genetic and both her offspring have perfect toes. The farmer who gave her to me said she was hatched in a classroom incubator so I suspect temp issues were the problem in her case. Bottom line it isn't always a problem that will pass on but if you're unsure you can always keep her eggs only for eating