Four bands appear in gel electrophoresis. Gel electrophoresis is an experimental method used to separate mixtures of DNA, RNA, or proteins by molecular size.
DNA is negatively charged, so when a current is applied to the gel, the DNA migrates towards the positively charged electrode. Fragments are ordered by size because short DNA strands migrate through the gel faster than long strands. There are some basic steps for performing gel electrophoresis outlined below. 1) pour the gel, 2) prepare the sample, 3) load the gel, 4) run the gel (expose it to an electric field), 5) stain the gel. Gel electrophoresis is a technique for separating biomolecules by size. Separation of these molecules is achieved by placing them in a small pore gel and creating an electric field across the gel
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#SPJ4
 
        
             
        
        
        
Answer:
Guilt, self disgust, senslessness
Explanation:
Boston is plagued by feelings of guilt and self-disgust after the senseless, cold-blooded murder of Gumboot Dhlamini. He wants to know if Tsotsi shares these feelings. Boston asks Tsotsi many questions and this has a profound effect on Tsotsi, who does not remember much of his past.
 
        
             
        
        
        
Not sure about the answer but I think its the size of the system
        
                    
             
        
        
        
A developing embryo is typically more susceptible to damage/injury during the early stages of pregnancy.
        
             
        
        
        
Double fertilization happens when one sperm cell wires with the egg to create a zygote, and the other sperm cell wires with the two polar cores to make the endosperm. 
To answer the above:
Once double fertilization occurs in plants, the zygote is diploid and the endosperm is <span>triploid.</span>