Answer:
 A single gene form different isoforms of protein that result from the alternative splicing of pre-mRNA sequences. one gene many polypeptide hypothesis applies here very well.  This whole process helps in proliferating informational diversity and functional capacity of a gene that'll ultimately he;p in gene regulation.
This alternative splicing of pre-mRNA also produces proteomic diversity that result in various development states as well as various disease conditions later.
 
        
             
        
        
        
B Carbón dioxide 
Not sure
        
                    
             
        
        
        
Answer: They are also known as  <u>B. tranquilizers</u>
<u />
Hope this helps!
 
        
             
        
        
        
Answer:
The next step would be the bottom left corner. 
Explanation:
This phase is called Anaphase 1.
Hope this helps!
 
        
             
        
        
        
Explanation: Most planarians are found in freshwater. Since they reproduce through fission, they reproduce asexually. However, since they are heteromorphic, they also reproduce sexually.