A gene for disease resistance in fir trees is transferred to pine trees using modern DNA technology. How might this be economically helpful to tree farmers?
A) Abnormal pine tree growth would be eliminated.
B) Erosion of topsoil would no longer be a concern.
C) Pine trees would be safe from pine beetle attacks.
D) More pine trees would live to maturity, increasing lumber output.
Eliminate

If a disease-resistant gene is transferred from one tree to another, more of the recipient trees would live to maturity, leading to an increase in the lumber output.

Gene transfer

When a disease-resistant gene is transferred from one species to another, the gene confers disease resistance to the recipient species.

Thus, the pine trees in question would become disease-resistant. As a result, more pine trees will reach maturity.

At maturity, pine trees are economically important as lumber. Hence, lumber output will increase due to the transfer of a disease-resistant gene from the fir tree.

More on gene transfer can be found here: https://brainly.com/question/763466