the Nucleus 
Explanation:
Known as the cell's “command center,” the nucleus is a large organelle that stores the cell's DNA (deoxyribonucleic acid). The nucleus controls all of the cell's activities, such as growth and metabolism, using the DNA's genetic information.
 
        
             
        
        
        
Initiation, elongation, and termination
        
             
        
        
        
Depending on what trait the alleles carry, the brothers will have a different phenotype and a different genotype. 
For example; Eye color. My sister is heterozygous, meaning she has brown eyes. I am homozygous recessive, meaning I have blue(green/hazel) eyes. We both have the same parents, I just happened to inherit both of the recessive eye color alleles from my parents whereas, my sister inherited both the dominant and recessive alleles. 
So, since the brothers inherited different sets of alleles, their genotype for a certain trait will be different.
        
                    
             
        
        
        
Answer:
A longshore current is when the wave reaches the coastline and release bursts of energy.An which it can run parallel to the shoreline.
Explanation:
 
        
             
        
        
        
Answer:
Disruptive Selection.
Explanation:
Disruptive selection, also known as selection diversification, explains shifts in population genetics that prefer extreme values for a trait over intermediate values. In this case, trait variation increases, and the population is split into two different classes. So, in the given case where A "U-shaped" distribution for a trait, with high frequencies of individuals who exhibit extreme values for a trait (and few individuals with medium values), is most likely to be caused by Disruptive selection.