2. Materials and Methods
2.1. Genomic DNA extraction
Samples of blood collected from 124 sheep of the Lori sheep breed from Lorestan province of Iran were
studied. Genomic DNA was extracted by salting out method according to Miller et al. [11] with minor
modifications.
2.2. PCR-RFLP analysis
DNA primers described by Freking [12] were used to PCR amplification: forward primer 5´- TGA AAA
CGT GAA CCC AGA AGC - 3´ and reverse primer 5´ - GTC CTA AAT AGG TCC TCT CG - 3´. The PCR
reaction were carried out in 15 μl volume containing 50 ng DNA, 1 U Taq polymerase (Fermentas), 1 x PCR
buffer (NH4) 2 SO2 ,2 mM MgCl2 , 200 μM dNTP, 2 μM of each primer. The PCR reaction was optimized in
the thermocycler MJ Mini (Biorad) .The following amplification parameters were applied: 95 oC for 4
minutes followed by 35 cycles: 94 °C for 20 seconds, 58 °C for 30 seconds, 72 °C for 1 min. The PCR
products of 426 bp were digested with 10 units of the FaqI (BsmFI) restriction enzyme (Fermentas).
Restriction digestion fragments were loaaded on 2 % agarose gel (Invitrogen) containing ethidium bromide and the gel were analyzed in the UV rays.
2. Materials and Methods
2.1. Genomic DNA extraction
Samples of blood collected from 124 sheep of the Lori sheep breed from Lorestan province of Iran were
studied. Genomic DNA was extracted by salting out method according to Miller et al. [11] with minor
modifications.
2.2. PCR-RFLP analysis
DNA primers described by Freking [12] were used to PCR amplification: forward primer 5´- TGA AAA
CGT GAA CCC AGA AGC - 3´ and reverse primer 5´ - GTC CTA AAT AGG TCC TCT CG - 3´. The PCR
reaction were carried out in 15 μl volume containing 50 ng DNA, 1 U Taq polymerase (Fermentas), 1 x PCR
buffer (NH4) 2 SO2 ,2 mM MgCl2 , 200 μM dNTP, 2 μM of each primer. The PCR reaction was optimized in
the thermocycler MJ Mini (Biorad) .The following amplification parameters were applied: 95 oC for 4
minutes followed by 35 cycles: 94 °C for 20 seconds, 58 °C for 30 seconds, 72 °C for 1 min. The PCR
products of 426 bp were digested with 10 units of the FaqI (BsmFI) restriction enzyme (Fermentas).
Restriction digestion fragments were loaaded on 2 % agarose gel (Invitrogen) containing ethidium bromide and the gel were analyzed in the UV rays.
การแปล กรุณารอสักครู่..
