I. Purpose: The Hardy Weinberg principle states that the allele and gene frequencies will stay constant from generation to generation as long as no other evolutionary influences come along. The evolutionary influences can be things such as mutation, mate choice, selection, genetic drift, gene flow, and meiotic drive.
Frequency is the proportion of individuals in a certain category relative to the total number of individuals considered. The frequency of an allele or genotype is expressed as a decimal proportion of the total alleles or genotypes in a population. For example, if 4 individuals in a population of 16 are genotype Bb, the frequency of Bb is 0.25 (calculated by dividing 4 by 16). If 75 out of 100 alleles in a population are B then the frequency of allele B in the population is 0.75.
The two Hardy Weinberg Equations are: p + q = 1 and p2 + 2pq + q2 = 1
If students follow the Hardy Weinberg directions properly then their traits will fit into the law because no other evolutionary influences will interrupt this lab.
III. Statement of the overall results
The frequencies matched and no number was off meaning that the Hardy Weinberg principle was used correctly. When counting and figuring out the two different equations the numbers fit together.
1. 100 blue beads
2. 100 white beads
3. Two containers to put the beads in
In the above picture labeled “Figure 1”, the simulation of the production of 100 offspring was recorded. This came from random mating of the “parental population” (the blue and white beads). Each offspring is represented by a pair of beads (which represent the gametes), the genotypes are as follows; BB, Bb, bb their frequencies are recorded in the table below:
50 bb-homozygous recessive
B- black fur
b- white fur