Genetics and Evolution

Why Are Vestigial Structures Not Removed by Natural Selection?

How Big Can Stick Bugs Get? The World’s Longest Insects

How to Make a Punnett Square With Two Traits

Why Can’t Humans Make Vitamin C?

How Many Blue Lobsters Are There in the World?

What Vegetables Are Not Man-Made?

What Are the Rarest Eye Colors and Their Causes?

Is Coronary Artery Disease Hereditary?

Just How Big Was Secretariat’s Heart?

How Many Chromosomes Do You Get From Your Mom?

What Is a Backcross? Purpose and Applications in Genetics

Are Bears Just Big Dogs? The Scientific Answer

What Is 5′ and 3′ in DNA and Why Does It Matter?

How are sister chromatids different from homologous chromosomes?

What Are the Main Differences Between DNA and RNA?

Why Do Dogs Have Flaps on Their Ears?

Do Prokaryotic Cells Have Plasmids? An Explanation

Are Anteaters Marsupials or Placental Mammals?

Do Cats and Dogs Have a Common Ancestor?

Does Lupus Skip a Generation? The Role of Genetics