Is cystic fibrosis a dominant or recessive trait?

Cystic fibrosis (CF) is caused by a recessive allele. You need to inherit two copies of the faulty allele to have CF. If you just have one copy of the faulty allele, you are a carrier but have no symptoms. If two carriers have a child between them, there is a one in four chance of that child having the disorder. read more

Cystic fibrosis is an autosomal recessive disorder. The CF gene resides in Chromosome 7. Each individual has two copies of a particular chromosome, one from each parent, in this case Chromosome 7. If one of the two contains the CF gene, the child will not present the disease. read more

Recessive. One needs two defective copies of the cystic fibrosis to develop the disease. read more

Autosomal recessive: cystic fibrosis (CF), sickle cell anemia (SC), Tay Sachs disease Autosomal recessive: cystic fibrosis (CF), sickle cell anemia (SC), Tay Sachs disease Genes are inherited from our biological parents in specific ways. read more