Answer:
Genes called "molecular switch" or master genes have the purpose of control when other genes are expressed (option A).
Explanation:
Master gene is so named because it has the function of controlling the behavior of other genes, organizing their functions and regulating when they can be expressed.
The name of molecular switch is synonymous with the master gene, since its activation determines the genetic regulation necessary to establish cell differentiation and even the determination of the sex of some species.
The other options are not correct because:
<em>     B. Master genes do not </em><u><em>determine the organization of the genome</em></u><em>
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<em>     C. </em><u><em>Regulation of cell metabolism</em></u><em> depends of substances as hormones and enzymes.
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<em>     D. </em><u><em>The rate of translation</em></u><em> does not depend on the activity of master genes.</em>
 
        
             
        
        
        
<span>The answer is: they are not the right ways to lose weight.
</span><span>All of these methods are not healthy because they don't have enough essencial nutrients, they</span> contain chemicals/ irregular ingredients and makes our metabolism slow down to save energy.
They can make people lose weight because they are cutting drastically their calorie intake but it can't be maintained forever. Most likely people will regain the weight lost after ending this diets.
        
             
        
        
        
Coal is considered a non renewable source because the earth cannot replenish it.
        
                    
             
        
        
        
The tennis ball. Because of less mass
        
                    
             
        
        
        
Answer:
Option A
Explanation:
In a circular economy, good/services/monetary object is in continuous usage up till its maximum value. The good/services/monetary object keep on moving from one service life (one user) to other service life (other user) as they are regenerated and recovered at the end of each service life.  
In option A, thrift store has been used to its full extent in one service life and then it is donated (start of second service life)
 Hence, option A is correct