How many genes control that trait
        
                    
             
        
        
        
4 cells will result. Each cell will have 20 Chromatids which is half a chromosome. once sexual reproduction takes place, these 20 chromatids will match with those from the other parent cell to form chromosomes 
        
             
        
        
        
The organism that was most likely to live at the same time as brachiopods were
Trilobites
 
        
             
        
        
        
Answer:
Explanation:
Lymphatics join up to form up larger lymph vessel than gradually transport the lymph back to the large veins that run just beneath the collarbone called the subclavian veins.
 
        
             
        
        
        
In a closed ecological system, any waste products produced by one species must be used by at least one other species. If the purpose is to maintain a life form, such as a mouse or a human, waste products such as carbon dioxide, feces and urine must eventually be converted into oxygen, food, and water.