Inheritance & Variation of Traits, Inheritance 2: Role of DNA (HS), Inheritance 4: Asexual/Sexual (MS), Inheritance 5: DNA Technology (MS), Life Science, Natural Selection & Evolution, Non-NGSS Articles, NSE 3: Trait Selection (HS), NSE 4: Adaption (HS), NSE 4: Fitness (MS), S&F 1: DNA to Proteins (HS), S&F 2: Cell Function (MS), Structure and Function

Anhydrobiosis without trehalose in bdelloid rotifers

Anhydrobiosis without trehalose in bdelloid rotifers SUMMARY: There are many types of organisms that can dry out, rehydrate, and then go about their lives with no problems. Many of the larger ones use trehalose or sucrose as an antifreeze. Bdelloid rotifers (tiny microscopic animals) do not. This study looked at the carbohydrate content in desiccated… Continue reading Anhydrobiosis without trehalose in bdelloid rotifers

Inheritance & Variation of Traits, Inheritance 5: DNA Technology (MS), Life Science, Natural Selection & Evolution, NSE 2: Taxonomy (MS)

Genetic diversity of Entamoeba in cockroaches

Genetic diversity of Entamoeba: Novel ribosomal lineages from cockroaches SUMMARY: Researchers in this study looked at the diversity of Entamoeba in 3 different species of cockroaches (the American roach, the Dubia roach, and the Madagascar hissing roach) by looking at SSU rDNA in the ground up intestines of the cockroaches. They found that the Entamoebas… Continue reading Genetic diversity of Entamoeba in cockroaches

Inheritance & Variation of Traits, Inheritance 1: Behavior and Reproduction (MS), Inheritance 2: Genes and Growth (MS), Inheritance 2: Role of DNA (HS), Inheritance 4: Asexual/Sexual (MS), Inheritance 4: Population Genetics (HS), Inheritance 5: DNA Technology (MS), Life Science

Sexual reproduction in parasitic protists

Sexual reproduction and genetic exchange in parasitic protists SUMMARY: Sexual reproduction is often murky in parasites because it’s difficult to observe at times. There are two other ways to determine if an organism has sex: differences in genomes and genes for meiosis. However, in parasites, there are exceptions to this rule in that some organisms… Continue reading Sexual reproduction in parasitic protists

Inheritance & Variation of Traits, Inheritance 1: Mitosis (HS), Inheritance 2: Genes and Growth (MS), Inheritance 2: Role of DNA (HS), Inheritance 4: Asexual/Sexual (MS), Life Science, M&E 1: Photosynthesis (HS), M&E 1: Photosynthesis (MS), Matter & Energy in Organisms/Ecosystems, S&F 1: Cells (MS), S&F 2: Cell Function (MS), Structure and Function

Chloroplast Division

Chloroplast Division SUMMARY: Chloroplast division in plants is still a fairly unknown topic when it comes to specific cellular/molecular mechanisms. This paper describes, step by step, all the proteins and enzymes involved in helping chloroplasts divide (FtsZ, Min system, ARC6, etc.) It also compares the division of chloroplasts to binary fission in various prokaryotes (FtsZ… Continue reading Chloroplast Division

Inheritance & Variation of Traits, Inheritance 1: Behavior and Reproduction (MS), Life Science, Natural Selection & Evolution, NSE 3: Trait Selection (HS)

Insights into transgenerational epigenetics from studies of ciliates

Insights into transgenerational epigenetics from studies of ciliates SUMMARY: This article summarizes the examples of ciliate epigenetics. The first section is an introduction to their curious nucleus: they have two, and macronucleus and a micronucleus. Several examples of ciliate epigenetics are given in sections 2 and 3. Some morphological changes that can occur include surface… Continue reading Insights into transgenerational epigenetics from studies of ciliates

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