<span>The best response is that it reduces the effects of fragility and skin atrophy.</span>
        
             
        
        
        
C. a green parrot has an allele for green feathers and an allele for blue feathers.
 
        
                    
             
        
        
        
<span>The answer would be; a significant increase in blood temperature.
The muscle contraction from exercise will produce heat that will increase the body temperature. In a hot and humid condition, this will make the body temperature hard to be lowered. The increase of blood temperature will influence the respiratory control center, makes the respiration drift upward.</span>
        
             
        
        
        
Answer: 1. Cyclin-dependent kinases. 
2. The activation process is in two steps: binding of cyclin to cdk and then phosphorylation of cdk cyclin. 
3. They are activated when cdks sends signals to cell that is pass already into the next stage of the cell cycle. 
4. They are inactivated by the combination of P21 and Thr-14/Tyr-15 phosphorylation after uv induced DNA damage. 
5. Changes are seen in target protein level when cdks level rises. 
6. The targets are protein that promotes cell divisions.
Explanation: