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heredity

What Is Heredity?
Image: iStockphoto.com/TwillightProductions

What Is Heredity?

Since we inherit our parents’ genes, how come our sisters and brothers don’t look exactly like us? How come we sometimes look more like our grandparents?

No one could explain heredity at all until a monk started studying pea plants. Nowadays, though, we can see exactly what's happening as living things put some of their genes, but not others, into the cells that become their offspring.

University of Utah
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Dog Breeding Game

Dog Breeding Game

Can you breed a border collie puppy with a brown coat, long hair, floppy ears, or other specific traits? Hint: Success starts with the parents in this game (just like in the real dog breeding world). More...

Game
DragonflyTV/PBS
DNA: The Double Helix Game

DNA: The Double Helix Game

This game challenges you to make exact copies of 3 doubled-stranded DNA molecules by correctly matching their base pairs. Once you've done that, can you guess the organism you copied?
More...

Game
NobelPrize.org
Children Resemble Their Parents

Children Resemble Their Parents

Since ancient times, people knew that traits were inherited. But they could only guess what sort of offspring parents would produce. Then a monk began studying peas in his monastery's garden. More...

Interactive
Cold Spring Harbor Laboratory
Genetic Testing and Disease: Would You Want to Know?

Genetic Testing and Disease: Would You Want to Know?

In rare cases, people inherit a gene that dooms them to getting a deadly disease. Don't miss this video by a girl who may have such a gene. Read the article for the bigger picture. More...

Video
USA Today
How Genetic Disorders Are Inherited

How Genetic Disorders Are Inherited

You have to be unlucky in a number of ways before a disease-causing gene in your parent or grandparent causes a disease in you. More...

Interactive
Mayo Clinic
Sir Archibald Edward Garrod

Sir Archibald Edward Garrod

A pioneer British scientist, Dr. Garrod was the first to publish about recessive genetic inheritance in humans. He believed albinism was an “inborn error of metabolism.” Read more about his scientific contributions. More...

Profile
Cold Spring Harbor Laboratory
Crash Course: Heredity

Crash Course: Heredity

With the help of ear wax and his brother John, Hank Green reveals the secrets of heredity. More...

Video
Crash Course
Greatest Discoveries: Genetics

Greatest Discoveries: Genetics

Gregor Mendel’s observations of pea plants led to one of the greatest scientific discoveries of all time: that inherited traits pass from parents to offspring in a predictable way. More...

Video
Discovery
Meiosis: Where the Sex Starts

Meiosis: Where the Sex Starts

Like a dealer shuffling playing cards, nature mixes up the genes that go into sperm and eggs cells. That's why every new person (or mouse, or octopus) is a surprise. More...

Video
Crash Course
Pedigree Analysis: A Family Tree of Traits

Pedigree Analysis: A Family Tree of Traits

Where did your 3rd nostril come from? With this activity, you create a family tree to track how certain traits were passed along. Just kidding about the nostril, though. We meant your 2nd tongue. More...

Activity
Science Buddies

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