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  2. Handedness - Wikipedia

    en.wikipedia.org/wiki/Handedness

    Into the 20th and even the 21st century, left-handed children in Uganda were beaten by schoolteachers or parents for writing with their left hand, [121] or had their left hands tied behind their backs to force them to write with their right hand. [122] As a child, the future British king George VI (1895–1952) was naturally left-handed. He was ...

  3. Twins and handedness - Wikipedia

    en.wikipedia.org/wiki/Twins_and_handedness

    If the parents are both right-handed, in dizygotic and monozygotic twins there is a 21% chance of one being left-handed. If one parent is left-handed, in DZ and MZ twins there is a 57% chance of one being left-handed. If both parents are left-handed, it is almost certain one twin will be left-handed. [citation needed]

  4. 24 Things You Didn't Know About Left-Handed People - AOL

    www.aol.com/21-things-didnt-know-left-110300045.html

    Older Women Have More Left-Handed Babies. According to one Canadian study, women in their 30s and 40s were far more likely to have left-handed children than younger women. A study of 2,228 college ...

  5. Laterality - Wikipedia

    en.wikipedia.org/wiki/Laterality

    In the sport of cricket, some players may find that they are more comfortable bowling with their left or right hand, but batting with the other hand. Approximate statistics, complied in 1981, are given below: [4] Favoring right hand: 88.2%; Favoring right foot: 81.0%; Favoring right eye: 71.1%; Favoring right ear: 59.1%; Same hand and foot: 84%

  6. Gene involved in cell shape offers clues on left-handedness

    www.aol.com/news/gene-involved-cell-shape-offers...

    While these genetic variants account for only a tiny fraction - perhaps 0.1% - of left-handedness, the researchers said the study shows that this gene, called TUBB4B, may play a role in the ...

  7. Homochirality - Wikipedia

    en.wikipedia.org/wiki/Homochirality

    In biology, 19 of the 20 natural amino acids are homochiral, being L-chiral (left-handed), while sugars are D-chiral (right-handed). [1] Homochirality can also refer to enantiopure substances in which all the constituents are the same enantiomer (a right-handed or left-handed version of an atom or molecule), but some sources discourage this use ...

  8. Brain asymmetry - Wikipedia

    en.wikipedia.org/wiki/Brain_asymmetry

    An example would include handedness. Handedness can result from asymmetry in the motor cortex of one hemisphere. For right handed individuals, since the brain operates the contralateral side of the body, they could have a more induced motor cortex in the left hemisphere.

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