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dylid cynnal profion ar fêl a phaill a gasglwyd o'r ardal , ac ar fioleg pridd , er mwyn canfod a yw llygredd genetig wedi digwydd
tests should be conducted on honey and pollen collected from the area , and on soil biology , to see whether genetic pollution has occurred
gallant gynnal profion gwyddonol safonol ar fêl a phaill a gasglwyd o'r ardaloedd hynny , yn ogystal â phrofion ar fioleg pridd a rêp had olew a allai fod wedi traws-beillio , i weld a yw llygru genetig wedi digwydd
they could do some decent science on honey and pollen collected from those areas , as well as on soil biology and oilseed rape that might have cross-pollinated , to see whether genetic pollution has occurred