What is an example of antagonistic control?

Which of the following choices is not an effective solution to the energy waste related to inefficient lighting? a. using low-pressure sodium lighting sources b. pointing lights on billboards and street signs upward c. placing light sources on time controls d. shielding light to direct it downward

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Someone me with this: a mineral' is determined by its actomic structure.