SFWRENG 3RA3 Lecture Notes - Lecture 8: Coin Flipping, Genotype Frequency, Allele Frequency
20 Oct 2017
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These can be the same, or different. These can be the same, or different (adj. , n. form heterozygote) homozygous (adj. , n. form homozygote) Genotypes and phenotypes: a genotype is the collection of an individual(cid:495)s genes. Individuals with a1a1 genotype have light-winged phenotype . What we can observe about an individual. Make simple assumptions about how frequencies work. Look for evidence of systematic (not random) difference between expected and. Xx, we say that x is a dominant allele and y is a recessive allele. Individuals with a1a2 genotype ?? are co-dominant. Expected frequencies are usually calculated by assuming that alleles assort randomly and independently, like flipping two coins, or rolling two dice coin flipping. I flip two fair coins (ie. , each coin will land heads with probability 1/2). Frequency of genotype: a professional gambler can flip a coin so that it lands heads 70 the time. 8 have genotype a1a2, and 8 have genotype a2a2.
