The correct answer is letter A
Men differ from women in that they have one X and another Y chromosome (unlike X, Y has few genes and determines few characteristics), since women have only X chromosomes. X and Y chromosomes have few homologous regions , which makes certain characteristics completely influenced by sex.
An inheritance linked to sex or an inheritance linked to the X chromosome is called one in which the genes are located in a non-homologous region of the X chromosome. In this type of inheritance, females have three genotypes, and the male has only two.
