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Biology Archive
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Different dog breeds
Question: How did there get to be so many different types of dogs?
Angelique Demers, Allison Brown, Nicole Fillippidis,
Glen Crest Jr. High
Answer: At first, as for any animal, varieties are created by genetic differences
caused by mutation, followed by restrictions in breeding so that similar types mated
together and had offspring of their type. In dogs, this has been greatly speeded by
controlled cross- and in-breeding for commercial uses. --ProfBill
NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators.
Argonne National Laboratory, Division of Educational Programs, Harold Myron, Ph.D., Division Director.