...to go from mouth to anus varies from 24 to 72 hours. 
 
        
                    
             
        
        
        
The answer is squamous cell carcinoma. This is a type of
cancer where in one cause of this for it to occur is due to exposure of the sun
light. They have different types and two categories that fall in such as
melanomas and non melanoma.
 
        
             
        
        
        
Answer: Option B - There are more than four genes that determine this trait.
Explanation:
The tobacco plant species have its leaf colour with characteristics that changes gradually over a range of values, which refers to continuous variation.
Note that continuous variation keep expressing gene variants in successive generations of the tobacco plants, that differs from the parents. So, there are MORE THAN four genes controling the expression of varying phenotypes in the leaves 
 
        
             
        
        
        
Answer:
The pairing of the nitrogen bases in a DNA molecule is AT and CG. Let's say that the DNA strand has the sequence of ATCG. The complementary strand of that DNA strand will be TAGC. A and T & C and G must pair with each other. The replicated strand will be the same as the original strand because the complementary strand of the replicated strand will be ATCG, which is the same as the original strand. 
Explanation: