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In a population that is 10 percent AA, 20 percent Aa, and 70 percent aa, what is the frequency of allele A? of a?
Genetic/Bio Help!
In a population that is 10 percent AA, 20 percent Aa, and 70 percent aa, what is the frequency of allele A? of a?
How would I calculate this? Please explain!
1 Answer
- SmegheadLv 75 years ago
Let's say that there are 100 individual organisms. Each one has two alleles. 10 are AA, 20 are Aa, and 70 are aa. That makes 200 total alleles.
AA individuals have two A alleles, so there are 2* 10 = 20 A alleles from them. Aa individuals have one A allele, so there are 20 more A alleles in those individuals. There are therefore 40 A alleles out of 200 total alleles, for a frequency of 40/200 = 20% A. Similar calculations will show you that 80% of the alleles are a.