The gene for a particular trait that is passed only from fathers to sons is most likely... a. autosomal recessive
b. autosomal dominant
c. co-dominant
d. incompletely dominant
e. Y-linked
f. X-linked

e. y-linked

Explanation:

Because women have XX chromosomes they will inherit an X from their mom and an X from their dad.

However, men have XY chromosomes so they inherit an X from their mom and a Y from their dad.

If the father had a trait attached to his y chromosome he would not pass it to his daughters, but it would pass on to his sons.

c. heat from the poles back down towards the equator.