VirginiaCattle":1i94gr0l said:
I question the sex-linked logic.
I've had two cows with scurs and every daughter retained has them.
Registered Angus sires. In my experience, it is a dominant trait in females.
You are incorrect. Females MUST inherit two scur traits to be expressed.
"Presence of scurs (typically small, movable, hollow pseudo horns) only occurs in heterozygous polled animals (carry one polled allele and one horned allele, Pp). Scurred is also a sex linked trait meaning the
genetic inheritance is controlled differently in males than females. Scurs is a dominant trait in bulls meaning bulls only need one copy of the scurred allele to have scurs. Scurs is a
recessive trait in females meaning a cow needs to have two copies of the scurred allele to display the phenotype (see below for possible genotypes and resulting phenotypes for the horned, polled, or scurred conditions)."
https://asascienceblog.wordpress.com/20 ... ced-trait/