If the pair of alleles for baldness is given as Bb, a female carrier will be denoted by

Baldness is a genetic trait that is passed down through the chromosomes. The gene that determines baldness is located on the X chromosome. Females have two X chromosomes (XX) while males have one X and one Y chromosome (XY). The pair of alleles for baldness is given as Bb, where B represents the dominant allele for non-baldness and b represents the recessive allele for baldness. Since females have two X chromosomes, they can have two copies of the same allele (BB or bb) or one of each allele (Bb) for the baldness gene. If a female is a carrier of the baldness gene, it means she has one copy of the recessive allele (b) and one copy of the dominant allele (B), which gives her the genotype Bb. Therefore, the correct answer is: XBbXb, which represents a female carrier with one X chromosome carrying the dominant B allele and the other X chromosome carrying the recessive b allele.