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Barbara McClintock's Transposon Experiments in Maize (1931–1951)
By: Federica Turriziani Colonna
| Published: Feb 09, 2017
Barbara McClintock conducted experiments on corn (Zea mays) in the United States in the mid-twentieth century to study the structure and function of…
TransposonsCornCytogeneticsChromosomesGenetics
Paternal Sperm Telomere Elongation and Its Impact on Offspring Fitness
By: Joanna Yang, Zane Bartlett
| Published: Feb 07, 2017
Telomeres are structures at the ends of DNA strands that get longer in the DNA of sperm cells as males age. That phenomenon is different for most…
TelomereAgingSpermSpermatozoaTelomerase
Jelly Fish and Green Fluorescent Protein
By: Anna Guerrero
| Published: Feb 06, 2017
The crystal jellyfish, Aequorea victoria, produces and emits light, called bioluminescence.
Green fluorescent proteinFluorescent polymersProteinsBiofluorescenceLuminescence
DNA and X and Y Chromosomes
By: Anna Guerrero
| Published: Feb 06, 2017
Y-chromosomes exist in the body cells of many kinds of male animals.
Y ChromosomeX chromosomeSex ChromosomesChromosomesSex Chromatin
Mitochondria - Image
By: Anna Guerrero
| Published: Feb 06, 2017
Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They are composed of an outer membrane and an inner membrane.
Cell organellesMitochondriaEukaryotic cellsMitochondrionOrganelles
Chloroplasts
By: Anna Guerrero
| Published: Feb 06, 2017
Chloroplasts are the organelles in plant and algal cells that conduct photosynthesis.
ChloroplastsPlastidsChloroplast membranesThylakoidsChlorophyll
Southern Gastric Brooding Frog-Image
By: Anna Guerrero
| Published: Feb 06, 2017
The Southern Gastric Brooding Frog (Rheobotrahcus silus) was a frog species that lived in Australia. It was declared extinct in 2002.
EggsFrogsAustraliaTadpolesAmphibians--Larvae
US Endocrine Disruptor Screening Program
By: Alexis Abboud
| Published: Feb 02, 2017
In 1996, the US Congress mandated that the US Environmental Protection Agency (EPA) create and regulate the Endocrine Disruptor Screening Program.…
Endocrine disrupting chemicalsEndocrine toxicologyDevelopmental endocrinologyEndocrine SystemHormones
Isaacson v. Horne (2013)
By: Claudia Nunez-Eddy
| Published: Nov 16, 2016
In the 2013 case Isaacson v. Horne, the US Court of Appeals in the Ninth Circuit ruled that Arizona House Bill (HB) 2036, which prohibited abortions…
LawArizona. Attorney General's OfficeBirth control clinicsAbortionAbortion Centers
Tucson Woman's Clinic v. Eden (2004)
By: Claudia Nunez-Eddy
| Published: Nov 14, 2016
The case Tucson Woman's Clinic v. Eden (2004) established that some of Arizona's abortion clinic laws violated physicians' and patients' rights to…
LawAbortion--Law and legislation--United StatesAbortionBirth control clinicsArizona--History