In vielen Rinderrassen werden spontan auftretende genetisch hornlose Tiere gezielt selektiert.
Die Hornlosigkeit wird von einer dominant vererbten Mutation ( polled ) bestimmt, deren ungefähre Position im Rindergenom bekannt ist.
Die Lage einer zweiten interagierenden Mutation, die das vom Geschlecht abhängige Auftreten von sogenannten Wackelhörnern ( scurs ) beeinflusst, ist noch unklar.
www.genetics.unibe.chNowadays, horns are generally considered an undesirable trait by cattle farmers and are selected against in several breeds.
Absence of horns is controlled by a single dominant inherited mutation ( polled ), which has already been mapped in the bovine genome.
The location of an interacting second mutation responsible for the sex-influenced expression of scurs is still unclear.
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