Why did you flip a coin to determine which allele would be inherited by the offspring?

You flip a coin because the allele has a 1/2 - 1/2 probability of the two outcomes as is the case when a parent is heterozygous at a locus and so there is a 1/2 - 1/2 probability for each of the two alleles getting passed on to the offspring.

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.