THE SECRET CODE OF DNA. Razzell, Mary. Illustrated by J.O. Pennanen. Moonbeam (Ont.), Penumbra Press, c1986. unpaged, paper, $6.95, ISBN 0-920806-83-X. Grades 4-7 Reviewed by Eve Williams Volume 14 Number 5 1986 September Have you tried explaining DNA to any of your students in the upper elementary grades lately? Or have you thought yourself and your students unequal to the task? Mary Razzell took up the challenge, and aided by the friendly illustrations of J.O. Pennanen, got the job done. Razzell begins by asking questions such as, "Why do dandelion seeds always grow dandelions?" or "Why don't dogs sprout leaves?" and then proceeds to answer these questions. She goes on to explain about cells, about the code passed on in the genes; she deals with Crick and Watson discovering the DNA structure, and she discusses how scientists may find ways to improve the genes. As well, she firmly rebuts the idea that genes will be manipulated to produce giants or wings on cows, but suggests, instead, that gene splicing, etc., will be used to improve our world. This inexpensive little book is recommended for any elementary school collection or gifted resource centre. It is simply but clearly written, has a glossary, and it is inexpensive. Recommended for purchase. Eve Williams, MacNaughton H.S., Moncton, N.B.