Here are just a few of the harmful health effects of smoking pipes and cigars: Cancer. Even if you don't inhale, you can get a number of different cancers from smoking pipes and cigars. People who smoke cigars regularly are four to 10 times more likely than nonsmokers to die from cancers of the mouth, larynx, and esophagus.
Cystic fibrosis is a recessive disorder. In a recessive disorder, both parents must carry a copy of the abnormal gene for the problem to occur in their child. A person who has one copy of an abnormal gene for a recessive disorder is a carrier for that disorder, even though he or she may show no signs of it.
Cystic fibrosis occurs as a result of inheriting a recessive allele for it from both parents. This is ultimately a fatal disease, but with modern medical care, about 2/3 of the people with it survive into early adulthood. About 30,000 people have cystic fibrosis in the U.S. today.he situation in which two different alleles for a trait are expressed unblended in the phenotype of heterozygous individuals. Neither allele is dominant or recessive, so that both appear in the phenotype or influence it. Type AB blood is an example.