Genetics & Evolution


Hormones and How They Affect Our Lives

A hormone is defined as a chemical substance produced in the body that controls and regulates the activity of certain cells or organs. Despite operating as micro-level human body processes, their operations are essential to our survival and affect our everyday activities of life.


How Does Forensic Dna Profiling Work?

We know that everyone's DNA is unique, but do you know exactly how forensic scientists tell people apart from their DNA? In this article, we explore the concept of microsatellites (or STRs) and apply this knowledge to tackle an exciting mock case example with riveting twists and turns.


Blood Types: History, Genetics, and Percentages Around the World

Prior to the discovery of blood groups, blood transfusions were often deadly. Physicians attempted the use of milk and animal blood as an alternative to human blood, but met with limited success: the discovery of blood types allowed modern transfusions to safely take place. Blood typing, blood groups around the world, and the genetics of blood types are discussed in this article.


Redheads: The Genetics of Hair Color

Hair color is primarily genetic, and red hair is caused by mutations in the MC1R gene. The gene for red hair also causes an increased sensitivity to sunlight and a reduced sensitivity to anesthesia. Contrary to internet rumors, redheads are not going extinct! Famous redheads include Queen Elizabeth I and Malcolm X.