Answer:
1) Aa refers to the heterozygous of the genes. In this gene, both allele are different from one another. 
2) AA is a gene which is homozygous in nature. Homozygous means that both allele are the same. Capital letters i. e. AA is used for the trait that is dominant. 
3) aa is a gene which is homozygous in nature. Lower case letters i. e. aa is refer for the trait that is recessive. 
 
        
             
        
        
        
Double-stranded RNA is the answer to this question that you have asked
        
                    
             
        
        
        
Answer: 
FERTILIZATION
Explanation:
Fertilization, the fusion of haploid gametes from two individuals, restores the diploid condition. Thus, sexually reproducing organisms alternate between haploid and diploid stages. However, the ways in which reproductive cells are produced and the timing between meiosis and fertilization vary greatly.
 
        
             
        
        
        
Answer: you need to divide mass by volume, the honey will sink to the very bottom and the corn oil will float to the top 
Explanation: