Saturday, June 4, 2011

How has the human hand changed throughout time (i.e through generations)?

What are some changes that occur to the human hand with time ( meaning after a few generations) eg. skin colour can change. The changes can be genetic.|||Changing through only a few generations, it would depend on the population you%26#039;re looking at. The human hand is pretty remarkable - part of what makes us human is our opposable thumb, and the way in which we can manipulate it. The only thing that has changed within a few generations is our usage of our hands, from tending the land to typing an answer on yahoo.com! The hand WOULD change, however, if in a small, isolated population, there were a mutation that spread through the generations. Even then, it could take as little as 100 generations before a population could change.





On a whole, the human hand probably wouldn%26#039;t change much at all, unless there is a mutation or a recessive allele (gene) such as polydactylism. (That%26#039;s where the hand or foot has more than the usual five fingers or toes.) Even then, the amount of penetrance (how MUCH of the finger or toe that would be present, i.e. the entire finger or just a stub) is different.





Asking how a hand has changed, via skin color, is like asking why the clouds rain some days don%26#039;t on others. It depends on what kind of clouds you have! Likewise, if you%26#039;re skin color is peach colored, your hand if going to be peach colored! Unless, of course, you have a skin disease that changes your skin color.





I hope this answers your question!|||I stop slapping human pests.....My skin color has changed One of my antcestors changed from dark to light now it is my turn....Ask Micheal Jackson he can explain it better.........Blessings Yahoo

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