Which type of baldness genotype results in normal males and normal females?

The genotype that results in normal males and normal females, in the context of baldness, is associated with individuals having two recessive alleles, represented as "bb." In the case of baldness, particularly male pattern baldness, the trait is influenced by genetics, specifically with its association to androgen levels and hair follicle sensitivity.

When an organism is homozygous recessive (bb), it typically exhibits a normal phenotype regarding the trait in question, which in this scenario means neither male nor female is bald. The homozygous dominant (BB) and heterozygous (Bb) genotypes would likely lead to expressed phenotypes such as baldness due to the presence of the dominant allele.

In genetic terms, the recessive condition usually requires two copies of the recessive allele to manifest, which is the case here, making "bb" the genotype that results in normal hair patterns for both sexes. Thus, "bb" is indeed the correct choice for this question.