The proportion of a genotype (i.e., AB) in a population.
Explanation:
Every trait is controlled by some alleles and their combinations. Allele frequency determines the frequency of occurrence of a particular allele in a population.
It can be determined by genotype frequency or proportion of a particular genotype in a population. As a genotype is a result of various alleles coming together, its frequency can help us to calculate the allele frequency.
For example, in a population with two alleles A and B, A allele can either occur as AA or as AB. To calculate the frequency of A we will have to calculate the genotype frequencies of AA and AB.
Lumle region recieve the highest amont of rainfall because of the presence of mountains to the north of this region that blocks the monsoon clouds originating from Bay of Bengal