Ans.
Photic response or sneezing due to exposure of bright sunlight is a genetically inherited trait. A given, both man and woman are showing photic response and are heterozygous (Hh) for the trait.
It indicates that 'the inheritance pattern for photic response is autosomal dominance,' means the mutated allele (H) for the trait is dominant over normal or recessive gene (h), and presence of only copy of it can shows its effect.
Thus, the correct answer is 'dominant-recessive.'
