If an intercellular signal relies on some type of receptor to enter the cell, what happens next?
a. the signal produces an enzyme that spreads the message.
b. the signal is decoded by a hormone and then recoded for the ribosomes
c. the signal is transferred to an adjacent cell where it is interpreted.
d. the signal is delivered and intracellular communication takes over.

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.