If a single mutation turns off the growth of some pairs of legs within an organism, what's most likely affected?
a. a substituted gene
b. a deleted gene
c. a duplicated gene
d. a hox gene

Ahox gene has been affected. the hox gene is a related group of gene family that is responsible for the development of lower extremities.

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.

100 pounds is 100 pounds no matter the object or item being weighed