In cattle, the presence or absence of scurs follows a sex-influenced pattern of inheritance. A heterozygous male has ________ and a heterozygous female has ________.
A) Y-linked, X-linked
B) no scurs, scurs
C) X-linked, Y-linked
D) scurs, no scurs

Question

Quizplus · Accepted Answer

This pattern of inheritance is sex-influenced, not sex-linked. This means that the presence or absence of scurs is influenced by the sex of the animal and the presence of certain hormones, but not directly linked to a particular sex chromosome. Heterozygous males (with one allele for scurs and one allele for no scurs) will typically have scurs, while heterozygous females will typically have no scurs.

In Cattle, the Presence or Absence of Scurs Follows a Sex-Influenced