7 astounding facts about a great scientific mystery that's only found in 10% of the population


There's a minority that not many people think about and has stumped scientists for decades: lefties.About 10% of the human population is left-handed, yet no one knows for sure why lefties are so rare.It's probably the result of a mix of factors, including things related togenetics,evolution, and evenprenatal hormones.Or, it could be the result of something else entirely.

Here are some of the most interesting facts researchers have reported as they attempt to unlock the keys to left-handedness:


1. Twins are more likely to be left-handed, but no one knows why

2. Two left-handed parents have a 26.1% chance of having a left-handed child whereas two right-handed parents only have a 9.5% chance.

3. Most animals show no preference for handedness, or when one hand ismore dominant than the other. Humans and our closest relatives, chimps, are an exception. About 90%of humans and 70% of chimps are right-handed.

4. By contrast, parrots seem to show a preference for using their left limbs. One study of 320 Australian parrots found that 47% preferred picking up food with their left foot. Another 33% preferred using their right, while the rest had no preference.

5.For humans, handedness may develop in the womb. Researchers who recorded thumb-sucking in 75 fetuses found that, 10 years later, 100% of the fetuses who sucked their right thumb were right handed; 67% of those who sucked their left thumb were lefties.

6. Our language abilities could also play a role in handedness. The left hemisphere of the brain is thought to be dominant when it comes to language, both in terms of processing sound and helping assist with speech. Scientists have found that this is the case in 95% of people who are right-handed but only 70% of lefties — for the other 30% language was either dominant in the right hemisphere or equally shared by both sides of the brain.

7. Lefties are thought to be more creative and musically talented, but the science doesn't uphold this myth.

source: read.bi/1WSE1qk

8. Add yours

hmmmm

#Adonis3HasSopken

Is Lala a lefty ? If not this will remain here for ever

Interesting.

8 lefties are skillful, good in shooting, sport etc

8.their handwriting is outta dis world...so beautiful

greyce:
8.their handwriting is outta dis world...so beautiful

I can't agree more, however if can't be proven by science

ibkgab001:
Is Lala a lefty ? If not this will remain here for ever

lalasticlala ain't a leftie