We carried out parentage testing with DNA fingerprinting in two breeds of horse (Throughbred and Percheron) using three probes (M13 repetitive sequence, core sequence and MSl) and four restriction endonucleases (Hae III, Hinf I, Msp I and Pst I) . Using the core probe, extremely low polymorphisms were found in all restriction endonucleases. With the M13 probe, a few available fragments for parentage testing were detected in DNA fingerprints (DFPs) with Hae III and Msp I endonucleases. Using the MS1 probe, distinct DFPs fragments were found, but their polymorphism was found to be low. The results suggest that polymorphism in horses is lower than in the other species, such as chicken, cattle and mouse.
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Mannen et al. (1993) studied this question.
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