EF Core reference the same table twice

Question

Good morning everybody.

I am working on a proof of concept project at the moment and I have hit a little bit of a speed bump.

I am trying to reference the same model/class/entity twice within my model. The training video told me to create the entry twice once with a prefix of Id for the foreign key and another without the Id prefix for the navigational element. However, when I create the migration I am getting the foreign key created twice, for example GenderId and GenderId1. What am I doing wrong? Or did I misunderstand the video?

    public class Customer
    {
        [Key]
        public Guid Id { get; set; }

        [Required]
        public SystemAttributeValue TitleId { get; set; }

        [Required]
        public SystemAttributeValue GenderId { get; set; }

        [Required]
        [Display(Name = "First Name")]
        [MaxLength(50)]
        public string FirstName { get; set; }

        [Required]
        [Display(Name = "Last Name")]
        [MaxLength(50)]
        public string LastName { get; set; }

        //Navigational Properties
        public SystemAttributeValue Title { get; set; }
        public SystemAttributeValue Gender { get; set; }
   }