New research shows that people with blue eyes have a single, common ancestor. A team at the University of Copenhagen have tracked down a genetic mutation which took place 6-10,000 years ago and is the cause of the eye colour of all blue-eyed humans alive on the planet today.
What do you call a male and female zebra?
They have been called “striped horses.” Similar to horses, female zebras are called mares and male zebras are called stallions. Babies are called foals. Male baby zebras are called colts and female baby zebras are called fillies.
Do tomatoes have nicotine in them?
While most people know that nicotine can be found in tobacco, low levels of the compound can be found in peppers, tomatoes and other members of the Solanaceae flowering plant family. Researchers wanted to determine if even small amounts of edible nicotine would be able to lower the risk.
What time does the new york stock exchange open?
The NYSE is open for trading Monday through Friday from 9:30 am – 4:00 pm ET, with the exception of holidays declared by the Exchange in advance. The NYSE trades in a continuous auction format, where traders can execute stock transactions on behalf of investors.
How many white keys are there on a piano?
Almost every modern piano has 52 white keys and 36 black keys for a total of 88 keys (seven octaves plus a minor third, from A0 to C8). Many older pianos only have 85 keys (seven octaves from A0 to A7). Some piano manufacturers extend the range further in one or both directions.
Why does the Earth only see one side of the moon?
Only one side of the Moon is visible from Earth because the Moon rotates about its spin axis at the same rate that the Moon orbits the Earth, a situation known as synchronous rotation or tidal locking.
Why does grass make us itch?
Usually it’s because tiny edges and bristles on the grass make small cuts on your skin, causing slight itching. You probably can’t see the cuts,but they are called “blades” of grass for that reason.
How did mark twain get his name?
The real person was Samuel Langhorne Clemens. When he began writing, he chose the nom de plume, or pen name, of “Mark Twain.” “Mark Twain” is a riverboat term measuring two fathoms (12 feet) in depth: mark (measure) twain (two).