BIOL 1020U Lecture Notes - Lecture 1: Pea, Alcohol Dehydrogenase, Population Genetics
Document Summary
Adaptation, unity and diversity: three key observations about life: Population genetics is the study of patterns of genetic variation in natural populations. What can cause genetic variation: mutation - generates new variation. Allele frequencies: to measure genetic variation in a population you must know, frequency of an allele is simply. Example 1: the genotypes for pea color in mendel"s pea plants are: Aa yellow pea plant aa green pea plant. Population that is fixed for that allele i. e. page | 2. # of copies of an allele total # of alleles in population. Example 2: a population of 100 pea plants has the following genotype frequencies: # plants in population = 100: how many copies of a allele: Each heterozygote (aa) has one copy of a. # copies of a allele : total number of alleles in population = 100 x 2 = 200, using equation above:
