If a [[gene]] is altered in a [[germ cell]], the mutation is termed a '''germinal mutation'''. Because germ cells give rise to [[gametes]], some [[gametes]] will carry the [[mutation]] and it will be passed on to the next generation when the individual successfully mates. Typically germinal mutations are not expressed in the individual containing the [[mutation]]. The only instance in which it would be expressed in the individual is if it affected gamete production. It will more often affect the organism which grows from the gametes.<ref>''Understanding Biology''. Pearson.</ref> | If a [[gene]] is altered in a [[germ cell]], the mutation is termed a '''germinal mutation'''. Because germ cells give rise to [[gametes]], some [[gametes]] will carry the [[mutation]] and it will be passed on to the next generation when the individual successfully mates. Typically germinal mutations are not expressed in the individual containing the [[mutation]]. The only instance in which it would be expressed in the individual is if it affected gamete production. It will more often affect the organism which grows from the gametes.<ref>''Understanding Biology''. Pearson.</ref> |