Mammals contain a diploid genome consisting of at least 109 bp. Each group of 200 bp of DNA is combined with 9 histones into a nucleosome. Each group of 6 nucleosomes is combined into a solenoid, achieving a final packing ratio of 50. Part A What is the total number of nucleosomes in all fibers? Enter your answer as coefficient * 10^exponent (e.g., 2 * 10^3). Part B What is the total number of histone molecules in this diploid genome? Enter your answer as coefficient * 10^exponent (e.g., 2 * 10^3). part C If the length of each base pair is 3.4 \AA, and the packing ratio is 50, what is the combined length of all fibers? Enter your answer as coefficient * 10^exponent (e.g., 2 * 10^3).