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Identifying Biological Molecules: DNA, RNA, and Proteins

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Central Dogma

  • Central Dogma
    05:45

Introduction to Transcription

  • Overview of Transcription
    07:44
  • Introduction to Transcription
    05:51

Steps of Transcription

  • 3) Termination of Transcription
    02:44
  • 1) Initiation of Transcription
    04:16
  • 2) Elongation of Transcription
    04:01

Introduction to Translation

  • Ribosomal tRNA Binding Sites
    06:16
  • Ribosome Subunits
    08:42
  • Introduction to Translation
    06:12

Steps of Translation

  • 2) Elongation of Translation
    04:59
  • 3) Termination of Translation
    02:16
  • 1) Initiation of Translation
    05:03

Post-Translational Modification

  • Post-Translational Modification
    04:26

Introduction to Regulation of Gene Expression

  • Positive vs Negative Gene Regulation
    02:17
  • Introduction to Regulation of Gene Expression
    06:40

Prokaryotic Gene Regulation via Operons

  • Inducible Operons
    04:25
  • Prokaryotic Gene Regulation via Operons
    00:53
  • Repressible Operons
    03:42

The Lac Operon

  • In the Absence of Lactose
    04:34
  • The Lac Operon
    07:06
  • In the Presence of Lactose
    03:56

The Trp Operon

  • In the Presence of Tryptophan
    03:11
  • The Trp Operon
    05:30
  • In the Absence of Tryptophan
    03:42

Review of the Lac Operon & Trp Operon

  • Review of the Lac Operon & Trp Operon
    06:24

Introduction to Eukaryotic Gene Regulation

  • Map of Eukaryotic Gene Regulation
    04:22
  • Introduction to Eukaryotic Gene Regulation
    03:47

Eukaryotic Chromatin Modifications

  • Eukaryotic Chromatin Modifications
    03:55
  • Histone Acetylation
    04:14
  • DNA Methylation
    03:39

Eukaryotic Transcriptional Control

  • Introduction to Transcription Factors
    03:32
  • General Transcription Factors
    03:51
  • Specific Transcription Factors
    03:57

Eukaryotic Post-Transcriptional Regulation

  • Eukaryotic Post-Transcriptional Regulation
    01:56
  • 3) RNA Interference
    04:16
  • 1) Alternative RNA Splicing
    05:17

Eukaryotic Post-Translational Regulation

  • Protein Ubiquitination
    02:45
  • Eukaryotic Post-Translational Regulation
    03:55

Genes & Alleles

  • Genes & Alleles Example 1
    02:09
  • Genes & Alleles
    05:02
  • Haploid vs. Diploid Cells
    04:14

Homologous Chromosomes

  • Homologous Chromosomes
    08:09

Life Cycle of Sexual Reproducers

  • Life Cycle of Sexual Reproducers
    04:14

Introduction to Meiosis

  • Introduction to Meiosis Example 1
    01:43
  • Meiosis I & Meiosis II
    04:49
  • Introduction to Meiosis
    04:33

Meiosis I

  • Meiosis I
    07:55

Meiosis II

  • Meiosis II
    06:17

Genetic Variation During Meiosis

  • Genetic Variation During Meiosis
    07:08
  • Nondisjunction
    05:03
  • Independent Assortment
    08:49

Mitosis & Meiosis Review

  • Mitosis & Meiosis Review Example 1
    01:27

Introduction to Mendel's Experiments

  • Why Pea Plants?
    01:58
  • Introduction to Mendel's Experiments
    03:50

Genotype vs. Phenotype

  • Genotype & Phenotype
    06:36
  • Dominant vs. Recessive Alleles
    03:39

Punnett Squares

  • How to Use Punnett Squares
    07:05
  • Punnett Squares
    01:37

Mendel's Experiments

  • Self-Fertilization Experiment: True-Breeding vs. Hybrid Plants
    05:48
  • Mendel's Experiments
    03:02
  • Cross-Fertilization Experiment: Dominant vs. Recessive Alleles
    05:04

Mendel's Laws

  • Mendel's Laws
    01:16
  • Law of Segregation
    03:24
  • Law of Independent Assortment
    06:44

Monohybrid Crosses

  • Monohybrid Crosses Example 1
    03:12
  • Genotypic vs. Phenotypic Ratio
    02:48
  • Monohybrid Crosses
    02:05

Test Crosses

  • Test Crosses
    03:02
  • Steps to Performing a Test Cross
    05:05

Dihybrid Crosses

  • Dihybrid Crosses
    02:37
  • Dihybrid Crosses & Punnett Squares
    03:34

Punnett Square Probability

  • Rule of Multiplication (the AND Rule)
    06:30
  • Rule of Addition (the OR Rule)
    05:58
  • Punnett Square Probability
    03:38

Incomplete Dominance vs. Codominance

  • Codominance
    02:59
  • Codominance & Blood Type
    05:15
  • Incomplete Dominance
    03:09

Epistasis

  • Epistasis
    05:37

Non-Mendelian Genetics

  • Pleiotropy
    02:18
  • Multifactorial Characters
    01:39
  • Polygenic Inheritance
    02:27

Pedigrees

  • How to Read Pedigrees
    03:21
  • Pedigrees
    02:36

Autosomal Inheritance

  • Autosomal Inheritance
    01:02
  • Autosomal Disorders
    05:21

Sex-Linked Inheritance

  • X-Linked Recessive Pedigrees
    03:42
  • Sex-Linked Inheritance
    04:17
  • X-Linked Recessive Disorder: Hemophilia Inheritance
    04:37