Mutation is a source but it is not the main source after it comes recombination in which 2 chromosomes with “normal” survival are taken from natural population of Drosophila and combined. Then comes immigration of genes in which the new chromosome mix in with different gene frequencies.
Answer: chemical reaction
Explanation:
Once the bond is broken all the energy that was stored is then released and ready to be used.
I thinking the answer was for some genes, both alleles express together. Others combine to give an average phenotype....
