Population A population is a group of individuals of similar species which are occupying a particular area and the individuals interact, interbreed and exchange genetic material among each othe.
Population genetics It is the study of gene distribution and genetic variations within and between the population. It also determines the changes in allele and genotypic frequencies over the time period.
Gene pool Total number of genes present in all the individuals of a population is known as gene pool i.e. the proportion of different genes present in a population and pattern of gene distribution.
Hardy Weinberg Principle
Hardy Weinberg law states that the alleles and genotype frequencies in a population will remain constant from generation to generation when there is no other evolutionary influences occurS
No natural selection No mutation No migration and no gene flow Random mating Extremely large population size
Allele frequency- how often each of the allele is present 88 B b i.e. no of times B or b is present. 8 8 - Frequency of B-6/12-0.5 . Frequency of b-6/12-0.5
phenotype frequency-how often the different traits are 88 B bpresent i.e. no of times blue or pink is present. 8 8 - Frequency of Blue- 4/6-0.67 . Frequency of pink-2/6-0.33
Formula for calculating allele frequency Frequency of allele B - Number of allele B Total no. of alleles 2*Number of BB homozygous number of Bb heterozygote 2*Total number of individuals (p) -
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