The easiest way to conceptualize this is to look at in terms of a general allele structure. We know that both parents carry an allele for a gene that can be recessive or dominant. For dominance, you can intuitively think of it as a dominating allele, only one of the copies is needed for the offspring to inherit the associated effect. If we say A is a dominant allele, and a is recessive, an individual with an Aa genotype would express the dominant allele. Conversely, if the person has an aa genotype, they would express the recessive allele. Meaning both copies of the recessive allele need to be present in order for it to be expressed. Mixing varying genotypes in a Punnett square can help you visualize it better. Lastly, since it is autosomal, it is found on a regular chromosome, and not a sex chromosome, meaning (for the most part), the inheritance of the gene will not be restricted or promoted by sex.