Children begin to form a self concept around 18 months of age
        
             
        
        
        
Answer:
C. It reduces the percentage of recombinats 
Explanation:
When linkage between two genes increases, the chance of these two crossing over is reduced, because linkage keeps these particular genes together, unlike crossing voer which will mix them up. 
 
        
             
        
        
        
A dichotomous key is a 2 choice key. I believe this is the solution.
        
                    
             
        
        
        
Answer:
E
Explanation:
A chloroplast is the organelles in which photosynthesis takes in plants. The chloroplast has thylakoid lamellae that occasionally arrange itself into stacks called grana where there are photosystem units that have chlorophyll pigment. The chlorophyll pigments tap energy from the photons of sunlight and use it for photophosphorylation.