Jacob choose his little sister. He clicked her and brought up the screen to see what he could do to her. The list showed him that he could change her gender, her appearance, her race, her mentally (the way she thinks), and her past. He checked the gender and saw man , woman, and futa. He checked appearance and saw he can make her look like anyone, there was a warning saying that if he makes changes without checking the box beside the warning his appearance will change as well. race was apparent. Mentally showed that he can have her do things she would normally not do or stop doing some of things she can do. Like race/specie changing her past was apparent but in her case he could have her done anything he would have like her to have done in the past.