Reference no: EM132157976

In a species of plant, narrow leaves are the result of a recessive allele. The only alleles for leaf shape in this population are B (broad leaves) and b (narrow leaves). The number of plants with narrow leaves is compared to the number of plants with broad leaves over several generations. The table below shows this information:

Generation Broad leaves (B) Narrow leaves (b)

1 685 55

2 422 43

3 501 67

4 322 49

5 455 81

1. Use the Hardy-Weinberg equation to show whether or not this population is evolving.
2. Describe how the introduction of an herbivore that only eats narrow leaves would affect the frequency of B and b over time.