Question

If the Ey gene is ectopically expressed in larval cells of the area that gives rise to a leg, what is the likely effect on leg development?

1) The leg will develop normally
2) The leg will not develop
3) The leg will develop abnormally
4) Cannot be determined

Answer 1

If the Ey gene is ectopically expressed in larval cells of the area that gives rise to a leg, the leg will develop abnormally.

Step-by-step explanation:

If the Ey gene is ectopically expressed in larval cells of the area that gives rise to a leg, the likely effect on leg development would be 3) the leg will develop abnormally. The Ey gene is a master control gene that can turn on or off large numbers of other genes during embryogenesis. Ectopic expression of this gene in the leg area would disrupt the normal gene expression patterns and lead to abnormal leg development.