<span>the oldest form of biotechnology is : selective breeding
  biotechnology included all kind of efforts that we use to obtain a desired genetic result from the reproduction of a certain organism.
In the early years of biotechnology, we still hasn't developed a way to do genetic manipulation, so we do selective breeding to obtain our desired result</span>
        
                    
             
        
        
        
Ossiculoplasty is the term to repair the outer ear.
        
                    
             
        
        
        
Mono hybrid cross dihybrid cross homozygous cross heterozygous