Phospholipids have two distinct polarities. The phosphate head is always polar, while the two "tails" it has are nonpolar. 
        
             
        
        
        
Answer:
It's in their makeup to interact
Explanation
They need to interact to survive, to exist, to reproduce!
 
        
                    
             
        
        
        
The term 2pq represented in the hardy-weinberg equation is the frequency of heterozygotes and is denoted as option D.
<h3>What is Hardy-weinberg equation?</h3>
This mathematical equation is used to calculate the genetic variation of a population at equilibrium and can be seen below:
p² + 2pq + q² = 1
where 
p² is dominant homozygous frequency (AA)
2pq	 is heterozygous frequency (Aa)
q² is recessive homozygous frequency (aa).
The 2pq can be seen as the heterozygous frequency which is therefore the reason why option D which is frequency of heterozygotes was chosen as the most appropriate choice.
Read more about Hardy-weinberg equation here brainly.com/question/5028378
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