Is human height an example of a trait that represents sex linkage because many separate genes contribute to this single trait.

Many separate genes contribute to the human height, so it is the example of polygenic inheritance. Still, height is not sex linked trait. Sex linkage means that the expression of an allele is dependent on the gender. Height could not be a sex linked trait since both men and women have height, but the variations exist. Difference between men and women regarding the height is the consequence of the sex hormones on the height.

They create genetic variations