LIFE 102 Lecture Notes - Lecture 51: Allele Frequency, Gene Pool, Allele
Document Summary
*two processes produce the genetic variation that makes evolution possible. *in organisms that reproduce sexually, recombination of alleles is more important that mutation in producing the genetic differences that make adaptation possible. A localized group of individuals capable of interbreeding and producing fertile offspring. Consists of all alleles for all loci in a population. *a locus is fixed if all individuals in a population are homozygous for the same allele. The hardy-weinberg equation can be used to test whether a population is evolving: For a particular species, instead of thinking about genes as isolated units, look at: Where a mutation has created 2 alleles at a locus, p and q are used to represent their frequencies. The frequency of all alleles in a population will add up to 1. If mating is random, then the possible pairs of alleles can be expressed as: (p + q)2 =1. This can be multiplied out as: p2 + 2pq + q2 = 1.
