backcross
A surname.
present participle of overharass
(surgery) Alternative form of crowbill (“kind of forceps”) / Used other than figuratively or idiomatically: see crow, bill.
(genetics) To cross a hybrid with one of its parents.
育種家は望ましい形質を回復させるため、F1雑種を元の親の一方と戻し交配することにした。
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