As more and more information becomes uncovered about the nature and content of the human genome, we will be able to identify the genetic variants that code for phenotypic characteristics (e.g., red hair or blue eyes). For example, the Forensic Science Service has developed an SNP typing assay involving mutations in the human melanocortin 1 receptor gene that are associated with red hair phenotype (Grimes et al. 2001). The company DNAPrint is also developing a genetic test for inference of eye color (Frudakis et al. 2003b).
Perhaps SNP sites can be identified in the future that will correlate to facial features thus aiding investigators with information about the possible appearance of a perpetrator. However, due to the complexity of multigenic traits and outside factors such as aging and environment, it is unlikely that a few carefully chosen SNPs will present a foolproof picture of a sample's source. Research will likely continue in this area though and hopefully provide beneficial information to investigations of the future.
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This book discusses the futility of curing stammering by common means. It traces various attempts at curing stammering in the past and how wasteful these attempt were, until he discovered a simple program to cure it. The book presents the life of Benjamin Nathaniel Bogue and his struggles with the handicap. Bogue devotes a great deal of text to explain the handicap of stammering, its effects on the body and psychology of the sufferer, and its cure.