<P> A hereditary carrier ( or just carrier ) , is a person or other organism that has inherited a recessive allele for a genetic trait or mutation but does not display that trait or show symptoms of the disease . Carriers are , however , able to pass the allele onto their offspring , who may then express the genetic if they inherit the recessive allele from both parents . The chance of two carriers having a child with the disease is 25 % . This phenomenon is a direct result of the recessive nature of many genes . </P>
<P> A hereditary carrier ( or just carrier ) , is a person or other organism that has inherited a recessive allele for a genetic trait or mutation but does not display that trait or show symptoms of the disease . Carriers are , however , able to pass the allele onto their offspring , who may then express the genetic if they inherit the recessive allele from both parents . The chance of two carriers having a child with the disease is 25 % . This phenomenon is a direct result of the recessive nature of many genes . </P>
when might it be important to know if one is a carrier
when might it be important to know if one is a carrier
having a child
having a child