Both pleiotropy and polygenic inheritance are key examples of Non-Mendelian inheritance. Which of the following answer choices is true?
A) Polygenic inheritance is when one trait is controlled by one gene.
B) Pleiotropy is when one trait is controlled by multiple genes.
C) Pleiotropy is when one gene affects multiple characteristics.
D) Polygenic inheritance is when one gene affects multiple characteristics.

The answer is atmosphere. there are four spheres of the earth: 1. geosphere (from greek word 'geo' = ground), 2. hydrosphere (from greek word 'hydro' = water), 3. biosphere (from greek word 'bio' = life), and 4. atmosphere (from greek word 'atmo' = air). a magnetosphere is a region of space around astronomical objects controlled by the magnetic field of that object. through the process of elimination, since lightning is present in the air, it can be found in the atmosphere.