DNA fingerprinting in horses using a simple (TG)n probe and its application to population comparisons.
A synthetic polynucleotide (TG)n was hybridized to equine DNA digested with HinfI and hypervariable hybridization patterns were obtained. Mendelian inheritance of these DNA fingerprinting patterns was confirmed by pedigree analysis. Estimates of the probabilities of identical band patterns in unrelated individuals of different breeds (Swedish Trotters, North Swedish Trotters, Thoroughbreds and Arabians) were in the range 1 x 10(-4) - 7 x 10(-6). The variability derived with the (TG)n probe in horses was higher than what we obtained with several other commonly used probes for DNA fingerprinting. Individuals within breeds tended to be more similar to each other with regard to DNA fingerprint pattern than to individuals of other breeds. Moreover, a parsimony analysis made on the basis of the hybridization patterns gave clustering of individuals within breeds. The possibility of using hypervariable probes for the identification of breed-specific characters is discussed.
Ellegren
H
H
Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala.
Andersson
L
L
Johansson
M
M
Sandberg
K
K
D000818:Animals; D005075:Biological Evolution; D001947:Breeding; D016172:DNA Fingerprinting; D015342:DNA Probes; D005828:Genetics, Population; D006150:Guanine Nucleotides; D006736:Horses / Q000235:genetics*; D009693:Nucleic Acid Hybridization; D011110:Polymorphism, Genetic; D011119:Polynucleotides; D013942:Thymine Nucleotides
D015342:DNA Probes; D006150:Guanine Nucleotides; D011119:Polynucleotides; D013942:Thymine Nucleotides