In a laboratory experiment of sexually reproducing plants, a certain trait is determined by a single gene. The dominant allele has complete dominance over the recessive allele, resulting in two different phenotypes. Scientists created a new population of this plant by crossing 51 homozygous dominant individuals with 49 homozygous recessive individuals. The following results are from the first five generations of this population: Generation - Number of individuals with dominant trait - Number of individuals with recessive trait - Total number of individuals 1 - 51 - 49 - 100 2 - 285 - 0 - 285 3 - 270 - 90 - 360 4 - 315 - 105 - 420 5 375 - 125 - 500 On the basis of the data, propose an explanation for the phenotypic changes from generations 1 to 3. Do you think this population is in Hardy-Weinberg equilibrium?