Inheritance & Variation of Traits, Inheritance 1: Behavior and Reproduction (MS), Inheritance 2: Genes and Growth (MS), Inheritance 2: Role of DNA (HS), Inheritance 4: Population Genetics (HS), Life Science, S&F 1: DNA to Proteins (HS), S&F 2: Body Systems (HS), S&F 3: Body Systems (MS), Structure and Function

Variation in the human immune system is largely driven by non-heritable influences

Variation in the human immune system is largely driven by non-heritable influences SUMMARY: This study was a twin study. The researchers looked at different elements of the immune system: T-cells, NK cells, B-cells, cytokines, etc. and saw that the development of these cells were influenced by non-heritable factors such as the environment and random epigenetic… Continue reading Variation in the human immune system is largely driven by non-heritable influences

Inheritance & Variation of Traits, Inheritance 2: Genes and Growth (MS), Inheritance 2: Role of DNA (HS), Life Science, S&F 2: Body Systems (HS), S&F 3: Body Systems (MS), Structure and Function

Effects of Fat Loss on Inflammation

Substantial fat mass loss reduces low-grade inflammation and induces positive alteration in cardiometabolic factors in normal-weight individuals SUMMARY: This study looked at “normal weight female physique athletes” and how weight loss (specifically loss of visceral fat) decreased inflammation and increased enzymes that were beneficial for cardiovascular health. Results showed that weight loss upregulated genes that… Continue reading Effects of Fat Loss on Inflammation

Inheritance & Variation of Traits, Inheritance 5: DNA Technology (MS), Life Science

Role of CRISPR in Pathogenic Bacteria

The Role of CRISPR-Cas Systems in Virulence of Pathogenic Bacteria SUMMARY: The introduction talks about the different types of CRISPR-Cas systems and the first section explains how these CRISPR systems were used in the past (mostly to see the genotypic relationship between bacteria). It wasn’t until 2013 that scientists discovered CRISPR was a type of… Continue reading Role of CRISPR in Pathogenic Bacteria

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

Inheritance & Variation of Traits, Inheritance 4: Asexual/Sexual (MS), Inheritance 4: Population Genetics (HS), Life Science, Natural Selection & Evolution, NSE 1: Evolution Evidence (HS), NSE 4: Adaption (HS), NSE 4: Fitness (MS), NSE 5: Natural Selection (MS)

Rotifers Eating Foreign DNA

Evidence Supporting the Uptake and Genomic Incorporation of Environmental DNA in the “Ancient Asexual” Bdelloid Rotifer Philodina roseola SUMMARY: This study looked at whether bdelloid rotifers were better at taking in DNA compared to Monogononta rotifers. Bdelloids are a class of rotifers that only reproduce asexually. There has never been a male observed. Their cells… Continue reading Rotifers Eating Foreign DNA