The father's father donates only the Y chromosome, not the X chromosome. The father's mother gives him his X chromosome. 
 Therefore, the father's father does not pass on any of the genetics of his X chromosome 
        
                    
             
        
        
        
Yes I think you are right. It does not contain setae for food to travel to the anus. But it's something else that develops the food into poop and travels through anus
Hope this helps :)
        
             
        
        
        
<span>Leptin, a hormone predominantly made by adipose cells that helps to regulate energy balance by inhibiting hunger, is the hormone secreted into the bloodstream by fatty tissue to signal the hypothalamus that the body has enough food.</span>
        
             
        
        
        
D. Frederick Taylor because I learned it in class today and I searched it up
        
             
        
        
        
When you wake up a sleep walker, they will be startled, and can have an outburst.