Only one strand will be transcribed and the other servers as a coding stand. ... Without it, the single strand DNA with exposed nitrogenous bases is very unstable so two strands actually stabilise the structure.
        
             
        
        
        
Answer:
because they need foodi think 
 
        
                    
             
        
        
        
Concordance rates between monozygotic twins vary in different studies, approximately 50%; whereas dizygotic twins was 17%. Some twin studies (Koskenvuo et al; Hoeffer et al) have found rates as low as 11.0%–13.8% among monozygotic twins, and 1.8%–4.1% among dizygotic twins.
 
        
             
        
        
        
Answer:
100%
Explanation:
Father Genotype: BB
Mother Genotype: OO
One allele will come from the father and one from the mother. Based on the parents'  genotypes, any child will take the B allele from the father and an O allele from the mother, so it will have the genotype: BO
O is a recessive allele so the child will always have blood type B.