This was a small example to learn concepts, and it is much smaller than real genes. in a real gene, the exons average about 150 bases each and are almost always less than 400. introns can be highly variable in length but may be hundreds of bases. a small gene might have 4,500 bases and many exons and introns. remember that in this activity, each square was used to represent one base. one or two exons or introns might fill up a sheet of graph paper. how many pages would you need to represent a small gene of 4,500 bases? (figure out or count how many squares are on one sheet of graph paper. then figure out how many sheets would have 4,500 squares.)

Clues to ecological principles are given in numerous passages of the bible. a bible study of ecology actually opens the doors to better understanding of god's love and concern for the earth. use a concordance to locate bible passages associated with words concerning our stewardship of the earth. you may use a dictionary to find synonyms for these words: dominion replenish subdue judgment stewardship find each of the passages using these words related to principles of ecology. list all passages by quote, book, chapter, and verse under each word. use your own interpretation to rewrite what you think each verse is saying. after your discussion of each of these words, ask one other person to explain his understanding of the word and a related verse without any hints. summarize what he tells you. a concluding paragraph for each of the words should be written noting similarities and differences between your interpretation and that of each person consulted.