Life Science, Natural Selection & Evolution, Non-NGSS Articles, NSE 1: Evolution Evidence (HS), NSE 2: Evolution Factors (HS), NSE 5: Population Flux (HS)

Genetic Diversity in Laboratory Rodent Colonies

Inbred or Outbred? Genetic Diversity in Laboratory Rodent Colonies SUMMARY: This study looked at genetic diversity in gerbils used in labs. Due to the fact that labs are small, groups tend to become less diverse overtime; however, the overall diversity of the gerbils can be found if you outbreed them. The significance of inbred or… Continue reading Genetic Diversity in Laboratory Rodent Colonies

Inheritance & Variation of Traits, Inheritance 1: Behavior and Reproduction (MS), Inheritance 1: Mitosis (HS), Inheritance 4: Population Genetics (HS), Interdependent Relationships in Ecosystems, IR 1: Ecosystem Interactions (MS), IR 2: Affecting Biodiversity (HS), Life Science, M&E 3: Food Webs (MS), M&E 5: Changing Ecosystems (MS), Matter & Energy in Organisms/Ecosystems, Natural Selection & Evolution, NSE 1: Evolution Evidence (HS), NSE 2: Evolution Factors (HS), NSE 3: Trait Selection (HS), NSE 4: Adaption (HS), NSE 4: Fitness (MS), NSE 5: Natural Selection (MS), NSE 5: Population Flux (HS)

De novo origins of multicellularity in response to predation

De novo origins of multicellularity in response to predation SUMMARY: Chlamydomonas are common, single-celled green algae that have flagella and can move around. They’re a strange cross between plants and protists. In this study, scientists subjected chlamydomonas to predation by paramecia (common freshwater ciliates) and observed that after about 750 generations, the chlamydomonas took on… Continue reading De novo origins of multicellularity in response to predation

Inheritance & Variation of Traits, Inheritance 3: Mutations (HS), Inheritance 3: Mutations (MS), Life Science, M&E 2: Anabolism/Catabolism (HS), M&E 2: Metabolism (MS), Matter & Energy in Organisms/Ecosystems, Natural Selection & Evolution, NSE 1: Evolution Evidence (HS), NSE 2: Evolution Factors (HS), NSE 4: Adaption (HS), S&F 2: Cell Function (MS), S&F 4: Stimuli Response (MS), Structure and Function

All About Efflux Pumps

Bacterial Multidrug Efflux Pumps: Much More Than Antibiotic Resistance Determinants SUMMARY: Efflux pumps are found in all organisms; they play an important role in helping the cells pump out toxins, heavy metals, and in the case of antibiotic resistant bacteria, antibiotics! This article talks about how efflux pumps work, other ways that they are used… Continue reading All About Efflux Pumps

Inheritance & Variation of Traits, Inheritance 2: Genes and Growth (MS), Inheritance 2: Role of DNA (HS), Inheritance 3: Mutations (HS), Inheritance 3: Mutations (MS), Inheritance 4: Population Genetics (HS), Life Science, Natural Selection & Evolution, NSE 2: Evolution Factors (HS), NSE 3: Trait Selection (HS), NSE 4: Adaption (HS), NSE 4: Fitness (MS), NSE 5: Natural Selection (MS), NSE 5: Population Flux (HS), S&F 1: Cells (MS), S&F 1: DNA to Proteins (HS), S&F 2: Cell Function (MS), Structure and Function

How Bacteria Genes Change with Dryness

Environmental filtering of bacterial functional diversity along an aridity gradient SUMMARY: Genes of soil bacteria sampled in the Tibetan Plateau showed that as the environment got drier, the less diverse the genes were. Researchers wanted to compare bacterial gene diversity with the already-known diversity of genes in large animals in various environments. There were less… Continue reading How Bacteria Genes Change with Dryness

Life Science, Natural Selection & Evolution, NSE 1: Evolution Evidence (HS), NSE 2: Evolution Factors (HS), NSE 5: Natural Selection (MS), NSE 5: Population Flux (HS), S&F 1: DNA to Proteins (HS), Structure and Function

Antibiotic Resistant Bacteria in People and Chickens in Ghana

Detection and Characterization of ESBL-Producing Escherichia coli From Humans and Poultry in Ghana SUMMARY: Farm animals (for food) in African countries have high levels of extended-spectrum beta-lactamase (ESBL)-producing E. Coli. Beta-lactamase is an enzyme produced by certain types of bacteria that disable antibiotics. Researchers looked at fecal samples from children in rural Ghana and samples… Continue reading Antibiotic Resistant Bacteria in People and Chickens in Ghana