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Let's get started with Module 2!
Hope that Module 1 was not that hard for you. Here you will learn how to calculate the allele and genotype frequencies for a population.
How to calculate allele frequency?
Allele frequencies may also be studied at the population level. The frequency of different alleles in a population can be determined from the frequency of the various phenotypes in the population. In the simplest system, with two alleles of the same locus (e.g. A,a), we use the symbol p to represent the frequency of the dominant allele within the population, and q for the frequency of the recessive allele. Because there are only two possible alleles, we can say that the frequency of p and q together represent 100% of the alleles in the population (p+q=1).
Now, let's look at how to calculate allele frequency. In general, we can define allele frequency as this formula:
Watch this video from Khan Academy breaking down the steps in order to calculate the allele frequency.
Why allele frequency is important?
I will explain to you the importance of allele frequency through this video.
Once you have learned about the allele frequency, you can now look into genotype frequency.
What is genotype frequency?
This value gives an indication of the genotypes which are the most or least prevalent in the population. Watch this video to find out more.
To sum it up, this video by Jessica Pamment, professional lecturer at DePaul University, explains how to calculate allele frequency and genotype frequency in a population.
You can calculate allele and genotype frequency provided that you have all the needed data from a particular generation of population. But, what if you do not have a complete data about it? Well, for a start, you can look into Module 3. Just click the NEXT button.
Last modified: Tuesday, 25 June 2024, 3:59 PM