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Resumen de Biología General: Sistemas Biológicos, Genética, Evolución y Ecología

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Introduction to Population Ecology

  • Factors Affecting Population Size (N)
    01:48
  • Population Size & Density
    01:52
  • Introduction to Population Ecology Example 3
    01:51

Population Demography

  • Life Tables
    03:49
  • Population Demography Example 1
    02:18
  • Survivorship Curves
    02:54

Factors Limiting Population Growth

  • Density-Dependent Factors
    02:37
  • Factors Limiting Population Growth
    00:51
  • Density-Dependent vs. Density-Independent Factors
    03:14

Introduction to Community Ecology

  • Introduction to Community Ecology
    02:03

Community Interactions: Competition (-/-)

  • Resource Partitioning (Partial Niche Overlap)
    03:57
  • Competitive Exclusion Principle (Complete Niche Overlap)
    04:23
  • Community Interactions: Competition (-/-) Example 1
    04:23

Community Interactions: Exploitation (+/-)

  • 1) Exploitation (+/-): Predation
    01:42
  • 3) Exploitation (+/-): Parasitism
    02:37
  • Community Interactions: Exploitation (+/–)
    00:49

Community Interactions: Mutualism (+/+) & Commensalism (+/0)

  • Positive Interactions
    02:56
  • Summary of Community Interactions
    01:52

Community Structure

  • Community Structure Example 3
    02:22
  • Community Structure Example 1
    03:37
  • Community Structure
    04:25

Community Dynamics

  • Disturbances Make Communities Dynamic
    03:37
  • Secondary Ecological Succession
    02:31
  • Effects of Early-Arriving Species on Late-Arriving Species
    01:34

Energy Flow Through Ecosystems

  • Gross Productive Energy vs. Assimilated Energy
    05:28
  • Energy Efficiency in Ecosystems
    06:28
  • Energy Flow Through Ecosystems Example 2
    07:07

Energy & Biomass Pyramids

  • Energy & Biomass Pyramids
    05:41
  • Energy & Biomass Pyramids Example 1
    03:41

Biogeochemical Cycles

  • Biogeochemical Cycles Example 2
    02:40
  • Carbon Cycle
    04:20
  • Nitrogen Cycle
    08:32

Introduction to Ecology

  • Levels of Ecological Study
    05:01
  • Introduction to Ecology Example 1
    02:31
  • Environment vs. Habitat vs. Niche
    01:57

Introduction to Photosynthesis

  • Introduction to Photosynthesis
    03:32
  • Photosynthesis vs. Cellular Respiration
    07:55
  • Photosynthesis is a Redox Reaction
    03:20

Review of Photosynthesis

  • Recap Map of Photosynthesis
    08:50
  • Review of Photosynthesis Example 1
    02:06

Introduction to Aerobic Cellular Respiration

  • Introduction to Cellular Respiration Example 2
    01:53
  • Aerobic Cellular Respiration is a Redox Reaction
    04:18
  • Stages of Aerobic Cellular Respiration
    02:31

Review of Aerobic Cellular Respiration

  • Total Products for Each Stage of Aerobic Cellular Respiration
    07:25
  • Review of Aerobic Cellular Respiration
    07:51

Fermentation & Anaerobic Respiration

  • Lactic Acid Fermentation
    03:34
  • What Happens to Aerobic Organisms if There's No Oxygen?
    07:51
  • Alcohol Fermentation
    02:02

Genes & Alleles

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

Mutations

  • Mutations
    02:29
  • Types of Mutations
    08:44

Introduction to DNA Replication

  • Unwinding the DNA: Topoisomerase, Helicase & SSBs
    05:10
  • Components of DNA Replication
    04:47
  • Origin of Replication
    03:33

Central Dogma

  • Central Dogma
    05:45

Introduction to Transcription

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

Introduction to Translation

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

Introduction to Mendel's Experiments

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

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

Dihybrid Crosses

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

Non-Mendelian Genetics

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

Introduction to Evolution and Natural Selection

  • Introduction to Evolution and Natual Selection Example 1
    03:22
  • Introduction to Evolution and Natual Selection Example 2
    04:28
  • Typological vs. Population Thinking
    03:56

Natural Selection

  • Natural Selection Example 2
    05:11
  • Natural Selection: Observations and Inferences
    04:12
  • Natural Selection Example 1
    02:19

Evidence of Evolution

  • Types of Homologies
    04:46
  • Evidence of Evolution Example 1
    02:27
  • Fossils
    06:11

Evolution of Populations

  • Evolution of Populations Example 1
    03:33
  • Introduction to Evolution of Populations
    05:14

Genetic Variation

  • Sources of Genetic Variation
    02:16
  • Sexual Reproduction and Recombination
    05:08
  • Mutations
    06:42

Genetics and Allele Frequencies

  • Allele Frequencies
    06:36
  • Mendelian and Population Genetics
    04:26
  • Genetics and Allele Frequencies Example 1
    02:56

The Hardy-Weinberg Principle

  • Predicting Allele or Genotype Frequencies Using Hardy-Weinberg
    03:31
  • Testing if a Population is in Hardy-Weinberg Equilibrium
    08:26
  • B. Calculating Allele Frequency from a Genotype Frequency
    03:20

Natural Selection

  • Sexual Selection
    06:17
  • Natural Selection
    04:43
  • Natural Selection Example 3
    04:18

Genetic Drift

  • Genetic Drift Example 1
    02:00
  • Genetic Drift Example 2
    02:37
  • Genetic Drift
    05:06

Gene Flow

  • Gene Flow Example 1
    04:34
  • Gene Flow
    01:43

Putting it All Together

  • Putting it All Together
    11:28

Introduction to Speciation

  • Introduction to Speciation
    03:03

The Biological Species Concept

  • The Biological Species Concept Example 3
    02:15
  • Prezygotic Barriers
    05:18
  • The Biological Species Concept Example 1
    01:27

Allopatric and Sympatric Speciation

  • Allopatric and Sympatric Speciation
    02:46
  • Allopatric and Sympatric Speciation Example 1
    04:25
  • Allopatric Speciation
    03:53

Hybrid Zones

  • Hybrid Zones Example 1
    02:37
  • Hybrid Zones
    04:38

Speciation Time Scales

  • Gradual Evolution vs. Punctuated Equilibrium
    03:23

Origin of Life

  • Origin of Life Example 1
    03:23
  • Events that Lead to the Formation of Cells
    06:38

The Fossil Record

  • Biases in the Fossil Record
    03:17
  • Fossils
    03:54
  • The Fossil Record Example 1
    02:59

History of Life on Earth

  • History of Life on Earth Example 1
    04:53
  • Geologic Record
    07:18

Extinctions

  • Cretaceous Extinction
    04:55
  • Extinctions
    04:48
  • Sixth Extinction
    02:29

Adaptive Radiation

  • Developmental Genes & Regulation
    06:12
  • Cambrian Explosion
    05:10
  • Adaptive Radiation Example 1
    06:17

Evolution of Complexity

  • Origin of Complex Traits
    06:15

Introduction to Phylogeny

  • Binomial Nomenclature
    02:32
  • Systematics
    06:57
  • Introduction to Phylogeny Example 1
    01:31

Phylogeny

  • Phylogeny Example 3
    04:12
  • Parts of a Phylogenetic Tree
    05:16
  • Phylogeny Example 1
    06:11

Building Phylogenetic Trees

  • Shared Derived Characters
    05:42
  • Parsimony
    06:46
  • Building Phylogenetic Trees Example 1
    04:35

Cladistics

  • Cladistics Example 1
    03:52
  • Monophyletic, Paraphyletic, & Polyphyletic Group
    06:37

Phylogenetics and Genome Evolution

  • The Molecular Clock
    05:13
  • Homologs: Orthologs & Paralogs
    05:29

Conservation Biology

  • Biodiversity Hotspots and Endangered Species
    04:32
  • Biodiversity and Sustainability
    05:06
  • Pollution and Climate Change
    03:36