BIO101L Lab 8.docx - Lab 8 Population Genetics BIO101L...

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Lab 8 Population Genetics BIO101L Student Name: Colin Fiorentino Access Code (located on the lid of your lab kit): AC-8TCDJ23 Pre-Lab Questions Assumptions: There are approximately 3,000,000,000 base pairs in the mammalian genome (genes constitute only a portion of this total). There are approximately 10,000 genes in the mammalian genome. A single gene averages 10,000 base pairs in size. Only 1 out of 3 mutations that occur in a gene result in a change to the protein structure. In the mammalian genome: 1. How many total base-pairs are in all the mammalian genes?
2. What proportion (%) of the total genome does this represent?
3. What is the probability that a random mutation will occur in any given gene?
4. What is the probability that a random mutation will change the structure of a protein?
Note : In the following experiments on gene pool, gene frequency, and genetic diversity; assume there are four alleles for color and that they are all homologous. Experiment 1: Genetic Variation Post-Lab Questions 1. Beaker #1 Population Composition # of Individuals % of Population Red Beads Blue Beads Total Red Beads Blue Beads Total 25 25 50 50 50 100 2. Beaker #2 Population Composition # of Individuals % of Population Yellow Beads Green Beads Total Yellow Beads Green Beads Total 7 13 20 35 65 100 3. What can you say about the genetic variation between these populations?
Lab 8 Population Genetics BIO101L There is a relatively equal mix of genetics based on the results. Experiment 2: Genetic Drif Beaker #3 Population Composition # of Individuals % of Population Yellow Beads Green Beads Total Yellow Beads Green Beads Total 6 4 10 60 40 100 Beaker #1 Survivors Trial # of Survivors % of Population Red Beads Blue Beads Total Red Beads Blue Beads Total 1 10 15 25 40 60 100 2 13 12 25 52 48 100 3 4 21 25 16 84 100 4 18 7 25 72 28 100 5 15 10 25 60 40 100 Beaker #2 Survivors Trial # of Survivors % of Population Yellow Beads

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