| 1. | Deviations from Hardy–Weinberg | 
  |  |    |  | a. occur when evolutionary forces are operating on the population. |   |  | b. only occur in animals. |   |  | c. occur when evolutionary forces are not operating on the population. |   |  | d. occur because there are two alleles per genotype. |   |  | e. cannot occur in natural populations. |  | 
  
       | 1. | Deviations from Hardy–Weinberg | 
    |  |       |  | a. occur when evolutionary forces are operating on the  population. |    |  | b. only occur in animals. |    |  | c. occur when evolutionary forces are not operating on the  population. |    |  | d. occur because there are two alleles per genotype. |    |  | e. cannot occur in natural populations. |  | 
    
Answer:
 Explanation:
 The deviation from the Hardy-Weinberg law occurs when evolutionary forces are operating on the population The evolutionary forces are migration, mutation or selection, genetic drift, etc.
       | a. occur when evolutionary  forces are operating on the population. |