Hardy Weinberg Principle

The white flower phenotype is expressed in plants with the homozygous recessive genotype (rr). According to the Hardy-Weinberg principle, which describes allele and genotype frequencies in a population in equilibrium, the frequency of the recessive genotype (rr) is represented as , where is the frequency of the recessive allele (r).
Given that 36\% of the population has white flowers: - The frequency of the rr genotype is 36\%, or . To find the frequency of the recessive allele (r), calculate : Thus, the frequency of the recessive allele (r) in the population is 0.6.
To verify, note that the Hardy-Weinberg equation for genotype frequencies is: Where is the frequency of the dominant allele (R). Since : The frequency of the rr genotype ( ) matches the given 36\%, confirming the calculation.