Answer:
Artery 
Explanation:
Artery carries blood from the heart to other part of the body. While vein return the denourished blood to the heart via the ivc
 
        
             
        
        
        
Answer:
Organism with AABBCCDD genotype will produce only one type of gamete, ABCD and the organism having the genotype AaBbCcDd will produce 16 types of gametes. 
This is a percentage of 3.1%
Explanation:
 
        
             
        
        
        
Answer:
cells?
Explanation:
it would help if you gave the options :)
 
        
             
        
        
        
1. How many muscles are in the human body? 
2.What diseases affect the muscular system?
3. What are the functions of the muscular system?
4.what are two types of muscle fibre?
        
             
        
        
        
No. At that point, you need to determine if the problem lies in the control or the staining reagents or techniques.