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MCAT Modules - Review

Hamza Taj

A concise review of the Khan Academy MCAT Videos. Ok this is really random but I just hit a thousand plays or this, so could you hmu with any critique? Email [email protected] (takes 20 seconds!) Created by Hamza Taj

  • 4 minutes 58 seconds
    8:3. DNA Libraries and Generating cDNA
    Prot —> mRNA —> cDNA —> dsDNA. (Step 2 via reverse transcriptase and step 3 via DNA Polymerase). Now the dsDNA is injected into a virus which infects bacteria to make lots of the DNA.
    15 August 2020, 7:31 pm
  • 6 minutes 57 seconds
    8:2. Polymerase Chain Reaction
    Denaturation (Heat to high temp), Primer Annealing (Cool slightly), Primer Extension via polymerase (Heat but not as much as step 1).
    15 August 2020, 7:18 pm
  • 6 minutes 31 seconds
    8:1. Gel Electrophoresis
    GE find us the length of a DNA Strand (how many base pairs long).
    15 August 2020, 7:03 pm
  • 1 minute 41 seconds
    7:5. Applying the HP Equation
    Not really sure why I did a module on this - basically you know they’re homo recessive because they have blue eyes (the recessive trait), and you know to use q BECAUSE we’re dealing with the recessive trait.
    10 August 2020, 9:15 pm
  • 2 minutes 40 seconds
    7:4. The Hardy-Weinberg Equation
    HP Equation gives P(allele frequencies). P^2 is probability of homo dominant, Q^2 is probability of homo recessive, 2pq is probability of heterozygous allele combo. P = frequency of dom allele, Q = frequency of recessive allele.
    10 August 2020, 9:11 pm
  • 6 minutes 5 seconds
    7:3. Worked Example: Punnett Squares
    Discusses Dihybrid Crosses and the Law of Independent Assortment.
    10 August 2020, 9:00 pm
  • 59 seconds
    7:2. Co-dominance and Incomplete Dominance
    Don’t let the title fool you. This is short. Discusses complete, incomplete, and co-dominance.
    10 August 2020, 8:44 pm
  • 6 minutes 47 seconds
    7:1. An Introduction to Mendelian Genetics
    Discuss genes, alleles, geno/phenotypes, and punnet squares. The Khan Academy video discusses the history (Gregor Mendel) but let’s be real, who cares.
    10 August 2020, 8:38 pm
  • 2 minutes 14 seconds
    6:5. The Effects of Mutations
    Mutations can be good, bad, or both.
    10 August 2020, 8:18 pm
  • 8 minutes 19 seconds
    6:4. Mutagens and Carcinogens
    Define mutagens and then discuss endogenous and exogenous mutagens. (Endo: ROS); (Exo: intercalators, base analogues, carcinogens)
    10 August 2020, 8:10 pm
  • 10 minutes 46 seconds
    6:3. The Causes of Genetic Mutations
    Small scale mutations (point: TTM; frame-shift: ID) and Large-scale mutations (translocation, inversion).
    4 August 2020, 1:08 am
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