Three new department chairmen have been appointed in Brigham Young University's College of Biology and Agriculture.

Mark J. Rowe was named chairman of the department of food science and nutrition, replacing Clayton S. Huber, who earlier was appointed dean of the college.H. Duane Smith will replace Richard W. Heninger as chairman of the department of zoology. Heninger has been named associate dean of the college.

Donald N. Wright replaces James A. North as chairman of the department of microbiology. North is returning to full-time teaching and research after nearly six years as chairman.

Rowe graduated from BYU with a bachelor's degree in chemistry and a master's degree in biochemistry. He earned his doctorate in molecular biology from Stanford University. He joined the BYU faculty in 1987 after teaching at Eastern Virginia Medical School, Old Dominion University and the College of William and Mary.

A professor of nutrition at BYU, Rowe is a molecular biologist with a special interest in research on gene expression.

Smith, a professor of zoology, joined BYU's faculty in 1969 and is a vertebrate wildlife ecologist and mammalogist.

He received his bachelor's and master's degrees in zoology from BYU and earned his doctorate in vertebrate ecology from the University of Illinois, where he taught for one year before joining BYU.

Wright is a professor of microbiology and is a registered specialist in public health and medical laboratory microbiology. He received his bachelor's degree in bacteriology from the University of Utah and his doctorate in bacteriology and cell biology from Iowa State University.

Before joining BYU's faculty in 1969, Wright was chief of the Bacteriology Division of the Naval Biological Laboratory at the University of California at Berkeley. He holds a commission as a lieutenant commander in the U.S. Navy and served nearly 10 years as a microbiologist in Naval medical laboratories.

He is a member of the Utah County Board of Health and is editor of "Pediatric Infectious Disease."