Answer:
I believe that the correct answer is in fact B
 
        
             
        
        
        
Answer:
C
Explanation:
If the population is in equilibrium, the allele frequencies will be constant. 
There is nothing about the heritability of dominant or recessive alleles that make dominant ones any more likely by nature. This rules out choices A and B.
Genetic drift mentioned in D refers to alleles leaving a population. Nothing like this was mentioned in the question, so count that answer out.
C is the only remaining answer by process of elimination. It is also the most logical choice. Directional selection refers to a process of natural selection wherein extreme phenotypes (notched leaves, or non-notched leaves) are favored. In this case, there may be some external pressure causing notched leaf plants to be more evolutionarily fit, meaning that they survive long enough to reproduce more and increase allele frequency of the dominant allele.
 
        
             
        
        
        
Answer:
Mitosis
Explanation:
It takes place in two stages, e. g. Karyokinesis and Cytokinesis. 
 
        
             
        
        
        
The answer is A. The vacuole is like the storage space for the cell and it stores extra food and substances that the cell doesn't need at that moment.