Genetics and Evolution

What Is a Bear Related To? A Look at Their Family Tree

What Is a Test Cross in Genetics and How Does It Work?

How Big Was a Dilophosaurus? Separating Fact From Fiction

How Are Animals and Humans Similar?: Key Traits We Share

What Is the Difference Between Brachiosaurus and Brontosaurus?

What Animals Are Actually Slower Than a Sloth?

Do Sea Turtles Reproduce Sexually or Asexually?

What Is the Difference Between DNA and Chromosomes?

Which Snakes Have Live Births and Why They Do It

What Is the Principle of Fossil Succession?

Are Humans Currently Evolving? What the Science Says

What Is the Founder Effect? Definition and Examples

What Are Hox Genes and How Do They Shape Development?

Do Animals Have Morals? What the Science Says

What Is the Morphological Species Concept?

Is the Chicken the Closest Relative to the T-Rex?

How Does Crossing Over Lead to Genetic Variation?

Is a Cell Bigger Than a Gene? The Scale of Life

What Is the Difference Between a Gene and an Allele?

Why Were Animals Bigger in the Past?