The answer is B). Genetic screening basically testing for the genetic traits of an individual. Therefore the answer would be B). 
        
             
        
        
        
The microscope made the discovery of cells possible 
        
             
        
        
        
Answer:
Ukaryotes consist of membrane bound nucleus whereas prokaryotes lack a membranebound nucleus.
Explanation:
Ukaryotes consist of membrane bound nucleus whereas prokaryotes lack a membranebound nucleus. Prokaryotic DNA is doublestranded and circular. ... The main difference between prokaryotic and eukaryotic DNA is that prokaryotic DNA is found in the cytoplasm whereas eukaryotic DNA is packed into the nucleus of the cell.
 
        
             
        
        
        
Estuaries, salt marshes and mangrove forests have more variation in salinity than other marine habitats like the ocean and sea floor because of the environment present in these locations. They are considered to be unique ecosystems in semi-sheltered areas near the ocean coastline. These areas often serve as nursing grounds where young marine life is protected during development.