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Eye Color: Percentage of the World Population With Each Shade
science.howstuffworks.com/life/genetic/eye-color-percentage.htm
Understanding eye color percentage reveals how human genetics shapes the colors we see in the iris. The iris is the colored part of the eye, and its appearance depends largely on how much melanin pigment it contains.
Do short people live longer?
health.howstuffworks.com/wellness/aging/aging-process/short-people-live-longer.htm
If short people live longer, why is modern man taller than his ancestors? Learn if short people live longer and how height and longevity are linked.
Reading a Codon Chart and Identifying Amino Acids
science.howstuffworks.com/life/genetic/codon-chart.htm
If you're studying genetics, molecular biology or a related field, odds are good that you will need to learn how to read a codon chart (aka codon table) to better understand the genetic code.
What is the origin of life on Earth?
science.howstuffworks.com/life/evolution/origin-of-life-on-earth.htm
What is the origin of life on Earth? Learn about theories of evolution and the origin of life on Earth at HowStuffWorks.
What don't we know about mental illness?
people.howstuffworks.com/mental-illness.htm
Mental illness still has some mysteries, but it isn't a character flaw and can happen to anyone. Read about mental illness and what we know and don't know.
How Glasses Correct Colorblindness
health.howstuffworks.com/human-body/systems/eye/glasses-correct-colorblindness.htm
Colorblindness affects around 300 million people worldwide. HowStuffWorks explains what it is and how glasses can help.
Munchkin Cats: The Wiener Dogs of the Feline World
animals.howstuffworks.com/pets/munchkin-cat.htm
Munchkin cats were officially introduced to the world in 1991, though they've been around for decades. HowStuffWorks gets to know these feline cuties.
Have a Tabby Cat? It's Not an Actual Breed
animals.howstuffworks.com/pets/tabby-cat.htm
Tabby cats are everywhere. Whether they're lounging on windowsills or chasing toys across the living room floor, these striped felines are among the most recognizable in the pet world. But there's more to a tabby cat than just its good looks and charming antics.
Where Do Chickens Originate From?
animals.howstuffworks.com/birds/where-do-chickens-originate-from.htm
Ask someone where chickens come from, and you might hear "the farm" or maybe "the grocery store." But when someone asks, "Where do chickens originate from," they're looking for a deeper answer.
What can your spit tell you about your DNA?
science.howstuffworks.com/life/genetic/spit-dna.htm
Doctors always want your blood, but one day, a health care professional may ask you to open up and say, "Ptooey!" Why? Your spit holds a mother lode of biological information.