Reasons to Believe

Hearing Mechanisms

TNRTB Archive - Retained for reference information

A team of biologists, geneticists, and biochemists have discovered another example of irreducible complexity in the hearing mechanism of animals. An irreducibly complex system is composed of several well-matched, interacting parts that contribute to the basic function, and where function ceases if any part is removed. They identified for the first time five different complex proteins that operate together to perform a process called mechanotransduction, by which cells convert mechanical stimuli into electrical signals. This conversion is the first step in sending a signal to the brain of how much and in what way a stereocilium (a hair-like filament that is the main sound detector in the inner ear) has been disturbed by the propagation of a sound wave. The team found that if any one of the five proteins is disabled or disturbed the stereocilia fall apart and the organism becomes deaf.  Evolution cannot explain how all five proteins would arise through natural assembly at the right time, place, and configuration. A supernatural Creator seems necessary. 


J. Siemens et al., “Cadherin 23 Is a Component of the Tip Link in Hair-Cell Sterocilia,” Nature, 428 (2004), pp. 950-955; Christian Söllner, et al, “Mutations in Cadherin 23 Affect Tip Links in Zebrafish Sensory Hair Cells,” Nature, 428 (2004), pp. 955-959; David R. Corey and Marcos Sotomayor, “Tightrope Act,” Nature, 428 (2004), pp. 901-903. cgi-taf/DynaPage.taf?file=/nature/journal/v428/n6986/abs/nature02483 _fs.html cgi-taf/DynaPage.taf?file=/nature/journal/v428/n6986/abs/nature02484 _fs.html


RTB article: Facts for Faith articles on biological evolution                                                              

Subjects: Biochemical Design

Dr. Fazale Rana

In 1999, I left my position in R&D at a Fortune 500 company to join Reasons to Believe because I felt the most important thing I could do as a scientist is to communicate to skeptics and believers alike the powerful scientific evidence—evidence that is being uncovered day after day—for God’s existence and the reliability of Scripture. Read more about Dr. Fazale Rana