Such studies have produced the surprising result that regardless of the index used to measure handedness, with increasing age, the number of lefthanders diminishes markedly. Several genetic models have been proposed to explain sinistrality as an inherited trait. Simple single gene theories in which ...
The world is designed for right-handed people, but why does a tenth of the population prefer the left? (1) D. The answer to it remains a bit of a mystery. Since scientists have noticed that left-handedness tends to run in families, it's assumed that left-handedness has a genetic(基...
Left-handedness is an individual's preference to use the left-hand as the dominant hand(惯用手)1.___(perform) all kinds of tasks. In the world, about 10 percent of 2.___(individual)are left-handed. Men are more likely to be left-handed3.___ women and express the left-hand more...
Left-handedness is a cross-culturally universal, heritable phenotype in humans1that is thought to be associated with fitness costs2,3(reviewed in4, but see5). Typically around 11% of the population favour their left-hand6and though exact numbers vary with culture7, left-handers are always a...
Most scientists believe that DNA randomly arose as a right handed structure, and all DNA that has evolved since has had to follow that structure. DNA’s right-handedness may also be due to the Earth’s natural rotation, early human tire swing experimentation, or because our DNA is just too...
Furthermore, handedness-related differences have also been revealed for the hemispheric lateralization of the motor system13,14. Consistent with such a close link between handedness and lateralization, genetic models15 have provided a description for both handedness and brain asymmetry, thus suggesting...
由上文Since scientists have noticed that left- handedness tends to run in families,it's assumed that left-handedness has a genetic(基因的) part in it.(由于科学家们已经注意到左撇子倾向于在家族中遗传,所以他们认为左撇子有遗传的部分。)可知,科学家们认为左撇子有遗传因素。所以小题2是对本句同义的...
a 阅读下而短文,在空白处填入1个适当的单词u 或括号内单词的正确形式。k Left-handedness is an individual's preference
The world is designed for right-handed people, but why does a tenth of the population prefer the left?1. The answer to it remains a bit of a mystery. Since scientists have noticed that left-handedness tends to run in families, it’s assumed that left-handedness has a genetic(基因的)...
The world is designed for right-handed people, but why does a tenth of the population prefer the left?1. The answer to it remains a bit of a mystery. Since scientists have noticed that left-handedness tends to run in families, it’s assumed that left-handedness has a genetic(基因的)...