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Chimerism: You Can Be Your Own Twin
science.howstuffworks.com/life/genetic/chimerism-be-own-twin.htm
Tetragametic chimerism occurs when a single organism has two genetically distinct types of DNA.
You Can Get Pregnant When You're Already Pregnant
Is it possible for a woman to get pregnant when she's already pregnant? HowStuffWorks looks at superfetation.
Centrioles: You Can't Divide Cells Without Them
science.howstuffworks.com/life/cellular-microscopic/centriole.htm
Centrioles are spindles that create the pathways for chromosomes to follow during cell division.
Can we bring Neanderthals back?
science.howstuffworks.com/life/genetic/bring-neanderthals-back.htm
Neanderthals and humans coexisted for thousands of years, but the relationship between the two species was always a bit dysfunctional. Could we get reacquainted with our evolutionary peers?
Maine Coon Cats: Gentle Giants of the Feline World
animals.howstuffworks.com/pets/maine-coon-cat.htm
Known as the dogs of the cat world, Maine Coons are intelligent, eager to please and love water. HowStuffWorks gets to know this huge breed of cat.
Could You Really Outrun a Tyrannosaurus Rex?
animals.howstuffworks.com/dinosaurs/outrun-tyrannosaurus-rex.htm
OK, hop in your time machine, find a T. rex and challenge it to a race. Who'd win? Find out if you could outrun a Tyrannosaurus rex at HowStuffWorks.
Skate Fish vs. Stingray: Comparing Bottom-dwelling Fish
animals.howstuffworks.com/fish/skate-fish-vs-stingray.htm
At first glance, skate fish vs. stingray confusion is extremely understandable. Both belong to the class Chondrichthyes, the group of cartilaginous fish that includes sharks. They share flat bodies, wing-like pectoral fins, and bottom-dwelling habits.
What's the Difference Between a Wallaby and a Kangaroo?
animals.howstuffworks.com/mammals/wallaby-vs-kangaroo.htm
difference between a wallaby and a kangaroo, wallaby, kangaroos, wallabies, wallaby vs. kangaroo, are wallabies and kangaroos different
Genetics at Work Pictures
science.howstuffworks.com/life/genetic/genetics-work-pictures.htm
Our ultimate gene pictures show how our genes work. Check out our ultimate gene pictures to see how they operate.
4 Boa Snake Subspecies and the Constrictor Pet Trade
animals.howstuffworks.com/snakes/boa-snake.htm
The boa snake captivates reptile enthusiasts and researchers alike with its size, behavior and unique adaptations. Native to Central and South America, the large and heavy-bodied snake occupies a wide variety of habitats, from rainforests to arid regions.