Answer:
b. A Wood's light examination
Explanation:
A wood lamp examination is a test that uses ultraviolet light to examined a skin infected with bacteria or fungal infection.
 
        
             
        
        
        
If you wanted to obtain 100% roan calves, then it si required to cross parents who are homo-zygous (pure lines) for the genes associated with this trait.
<h3>What is a homo-zygous individual?</h3>
A homo-zygous is an individual who has the same gene variants or alleles for a given gene locus.
Conversely, a heterozygous is an individual who has different gene variants or alleles for a given gene locus.
In breeding, pure lines (or purebred) are homo-zygous individuals that may be crossed to obtain the desired trait in the descendence.
Learn more about homo-zygous individuals here:
brainly.com/question/13760394
 
        
             
        
        
        
C. "connect the brain to spinal cord"
hope this helps
 
        
             
        
        
        
Think about skin cells. Skin cells shed every day, if cell division didn't take place, you would just constantly be losing skin cells.