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Can you guys please answer mine as well I Really need help and this was due yesterday 
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He was a biologist who had studied about the heridity that transfers through chromosomes ( genes ) . He varified the chromosomal theory.. Morgan worked with tiny fruit flies ( Drosophilia ) . Many types of heredity variations he had observed.. And later , he gave a clear picture about the gene transfer.
        
             
        
        
        
Answer:
Am so sorry I can't help you I haven't learned that yet
 
        
                    
             
        
        
        
Answer:
well if a species has a mutation that helps it in its enviroment it will most likely live longer and get to reproduce more causing more of that same mutation therefore causing an adaptation.
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A comet always points in the opposite direction of the comet hence why it’s called the tail