I need help with this question please

2) Gene 1 on human chromosome 3 (which is approximately 200 Mb, long) has a single nucleotide polymorphism at base 164,500,000 where some genomes have an A and some a C. Gene 2 on the same chromosome has a single nucleotide polymorphism at base 184,500,000 from where some genomes have a G and some a T. Given the pedigree below, where an individual's genotype at Gene 1 is shown on top and their genotype at Gene 2 below, what is the probability that individual 3 has the genotype CC at Gene 1 and GG at Gene 2? (Use the crossover method to calculate recombination frequencies and then use the map distance method only to check your work. ) Chromosome 3 (200 Mb) 20 Mb Gene 1 Gene 2 A or C T or G GG TT CC GG 2 3