D is the right answer
But then again it is actually wrong... Either way D is the answer
        
                    
             
        
        
        
I am not entirely sure about this. So maybe my response can help you find the answer a little better if my answer is not entirely right? 
These last three questions are referring to everything you just worked on. So all you would have to do is refer back to your previous answers. Recall that the titles of the "part 1, 2, and 3" are titled "crossing beak color and tail-feather length", "crossing beak color and feather color", and "mapping tail-feather length and feather color". 
1.List the distances between each pair of genes: 
beak color and tail-feather length: 20 MU 
beak color and feather color: 16 MU 
tail-feather length and feather color: 4 MU 
2.Which two alleles are the farthest apart? 
(the one that is 20 MU apart) Y and L 
3.Which two alleles are the closest together? 
(the ones that are 4 MU apart) L and B 
        
             
        
        
        
The term "pneumocephalus" refers to the condition in which air is present in the cranial cavity. 
What happens in pneumocephalus?
- Increased intracranial pressure causes tension pneumocephalus, a neurosurgical emergency that can cause headaches, seizures, loss of consciousness, and even death. 
- Clinically separating the two entities is difficult but essential.
- Tension pneumocephalus following skull base surgery was found to be a rare phenomenon with just eleven cases described, according to a survey of the literature on PubMed/MEDLINE. 
- After treatment, the majority of patients experienced full symptom relief. 
- Following skull base surgery, tension pneumocephalus is a potential complication that clinicians should be aware of. 
- An understanding of imaging characteristics and a high level of suspicion are necessary for accurate diagnosis. Rapid management is essential to avoid potentially disastrous effects.
Learn more about human skull with the help of the given link:
brainly.com/question/4537715
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