In this way, they are able to match genes to the instructions they give. Researchers then use this information to learn about the genes of other species. For example, finding the gene that controls petal growth in one plant helps researchers find similar genes in other plants. These clues also can help researchers find genes that control growth in animals. Dog breeds were developed through many years of selective breeding by humans.
Biotechnology is the use of living things to make products.
Biotechnology is not new. People have long known how to use yeast to make bread rise and how to use bacteria to ferment beer and wine or to age cheese. In today's biotechnology industry, modern biological tools are used to make products. One such tool is genetic engineering of plants and animals. In the past, humans changed many species through selective breeding .