BIO 227 Lecture Notes - Lecture 3: Ecosystem Diversity, Genetic Variation, Biome
DEFINING DIVERSITY
• Genetic
• Individual
• Species
• Population
• Community
• Habitat
• Ecosystem
• Geographic
• Biome
BIODIVERSITY FROM GENES TO BIOMES
• Range of species and biological communities on Earth
• Genetic variation
• Habitat or Ecosystem diversity
CHARACTERISTICS OF CELLS
• cells, whether they are prokaryotic or eukaryotic, have some common features
• DNA, the genetic material contained in one or more chromosomes and located in a
membrane-bound nucleus in eukaryotes and a nonmembrane bound nucleoid region in
prokaryotes
• Morphological. A class of individuals having some common characteristics or qualities.
They are similar to each other but different from all others
• Biological. A group of living organisms consisting of similar individuals capable of
exchanging genes or interbreeding and that do not breed with individuals of other groups.
• SPECIES DIVERSITY = ECOSYSTEM STABILITY
GENETIC DIVERSITY
• Genetic Diversity: The range of genetic variation found within a species.
• Sexual reproduction is the means by which genes from two different individuals combine
to create a unique new individual.
Document Summary
Individual: genetic, species, population, community, habitat, ecosystem, geographic, biome. Biodiversity from genes to biomes: range of species and biological communities on earth, genetic variation, habitat or ecosystem diversity. A class of individuals having some common characteristics or qualities. They are similar to each other but different from all others: biological. A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding and that do not breed with individuals of other groups: species diversity = ecosystem stability.
