A. Alleles lineup independently of the other alleles
        
             
        
        
        
Mammals is the type of organism that least naturally
reproduced by cloning. Mammals reproduced by Sexual reproduction typically
requires the sexual interaction of two specialized organisms, called gametes,
which contain half the number of chromosomes of normal cells and are made by
meiosis, which usually a male fertilizing a female.
 
        
             
        
        
        
Answer:
via hydrogen bonds; there are two between adenine and thymine and three between cytosine and guanine