Transmission genetics- Linkage / Linkage?

Consider two linked autosomal genes. The dominant allele C of the first gene caused cataracts of the eye, whereas its recessive allele c produces normal eyes. The dominant allele of the second gene P causes polydactyly whereas its recessive allele p produces normal hands. A man with cataracts and normal hands marries a woman with polydactyly and normal eyes. Their son has both cataracts and polydactyly. The son marries a woman with neither trait. uming no crossing over, what is the probability that their first child will have both cataracts and polydactyly?