Explanation: If a person was born being able to walk on his hands, what would happen ! in other words would his hand wiz time turn to be like his legs and gain massive growth to be looking like the legs of a normal person.\n\nMoreover , they say that genes play the role in shaping the view of the body. Well, in this case i guess genes will fail ??
198858
If its a matter of just some people then nothing may happen.But if everyone start to behave that way,then possibly in a long time the hands may change shape ,and so would legs,,becuase nothing in nature is "just like that".Everything has its own function and meaning.So not just the hands and legs would change positions but also ,thoughts,brains,habits,and almost everything in humanity could change.maybe we humans would call ourselves by a different name then.Earth would be downside up ;).\n(in medical terms this is an anomaly if it happens,and may be due to mutations of some kind,,,only similar and repeated mutations can change the course of life)
340655
well for skin, fat, and blood cells, we can regenerate them if we lose them, the body is constantly generating new cells of those type.\n\nYou can't grow muscle, only tone it, because there is a limited amount of space on a persons frame for the connective tissue. and eventually those cells start to break down over time, and you loose stregnth. The same thing with nerve cells, you cant generate more nerves, but you can loose sensitivity in them over time.
114071
UPDATE: I've just read your comment so I'm leaving the difficult stuff below. \nFirst things first:\nProbably you know (but it's worth repeating) that the genetic information in each cell is kept as DNA. This DNA is able to copy parts of itself as RNA. RNA in turn builds proteins. Our bodies are not made only of proteins, but proteins are the ultimate regulators of what our body looks like and how it works. So, if a gene in your DNA synthesizes a specific RNA, and this in turn can make a particular protein, this protein will have to do with the way you look and function. Another person with a somewhat different "variety" of the same gene, will have a different appearance and/or function. Each gene codes for one protein, so it takes a really large amount of genes to code for all of them (and this is VERY simplified, the interactions are much more complex).\n\nNow for the second part: the fact that you have several really long DNA strands in each cell (these DNA strands are what can be visualized as chromosomes under special circumstances) does not mean that every single little gene in your DNA will generate RNA and ultimately produce a protein. Only a part of the DNA is actually active (and it's a small proportion), the rest is just "there" and doesn't code. And the expression of the gene (=when the gene's information becomes visible) depends on the interaction with other genes, with other substances that are cellular regulators, and many environmental factors. \n\nExample: you know Siamese cats? they have a genetic constitution such that the dark color proteins are formed especially at the body parts that are colder. So usually you get a sand-colored cat with black legs, tail, and ears. But for this pattern to show, there has to be interaction with the right temperatures. If the cat is not exposed to these colder temperatures, the dark parts don't develop. Or maybe other proteins or regulators "got in the way" of the process. And you get a cat with no dark parts (or the opposite, a very dark animal from excess cold). \nAnother example: suppose a baby is born from tall parents; they in turn had tall parents, so it's highly probable that the baby has the "tall" potential. But if this baby is not well nourished during his/her development, he/she will not reach the height that he "potentially should" have had. \nCan you see the difference? The genotype is ALL the genetic information that you have, and the phenotype is the result of the combination of this genetic information with other factors: the person/animal/plant as it is realized. \nI hope this helps you, I'll be around :-)\n\nCheck this site, it's great:\nhttp://evolution.berkeley.edu/evosite/evo101/IIIA1Genotypevsphenotype.shtml\n-------------------------------\nThe genotype is the genetic information that the said individual carries in each of his/her body cells. Much of that information is never expressed (=becomes "visible" or translates into actual characteristics), and much genetic information can yield different characteristics depending on the interaction with many environmental factors (which occur both inside and outside the cell or organism in question). Thus, the final fully developed individual is the result of the genotype ("raw" genetic information) PLUS environmental/developmental factors; the characteristics of this final product, the real individual, constitute the Phenotype. \nFor instance, an individual with a perfectly "normal" genotype may develop many types of abnormalities due to problems during pregnancy, including drugs, lack of oxygen, etc. Identical twins have the same genotype (they come from a single cell) but are never completely identical; and of course they have different personalities. This is because of all the epigenetic phenomena that influence development. And it's also the reason why reductionist approaches that s
347320
a child is created in his/her parents image, a gene from each  shapes the child, they decide the action that starts the creation, but yet a child  for the most part, is not equal to the parent,,,,\n\nand please dont classify all believers or even all believers in Jesus, into one group lol  i do both, yet are not christian
580168
This could very well be normal.  Some people have an odd system that causes them to grow hair in odd places.  Some women have facial mustaches, or beards-look at grandma if you want better ideas.  \n\nThere is also a condition that IS known to medical science where the person has an extra cromosome.  I know I read about this one chick that didn't realize how awkward her situation was until about 30 or something.  She married a man (apparently she was a normal everyday woman) and then discovered she could not conceive.  Several tests later, she discovered she could not conceive because this woman was technically supossed to be a male at birth, but for some reason the testosterone did not develope at the proper stage of fetis growth, so the remaining estrogen production continued.  I think her Chromosome situation was XYX?  Where only two chromosomes are required for "normal" humans to determine sex, she somehow had both sides of the coin with a odd "mutation" of sorts if you will pardon the crude word.  (Imagine if you have a string of letters making a sentence so that it makes sense to read aloud--ie DNA/gene sequence coding- but then, as the chain of letters is being read loud, someone else had the ability to grab on the the last word of the sentence and gain improper context of the sentence-a possible enzyme or hormone that triggers on the last chromosome, in this case incorrectly as she had three instead of two)\n\nIt is also possible that as your body matures and grows with age, medication, and cell stimulation (whatever the cause of this cell stemulation is) might be manipulating your hormone production as it does with certain grandma's causeing odd things to happen to their bodies.  It is not uncommon.\nIf you are actually this worried about your gender, please...by all means see a doctor and validate your concerns with your doctor.  the Doc will definitely do what it takes to satisfy your curiousity, although I am certain it will end up costing quite a bit in lab tests and result confirmations.
406003
Who cares? Our lives are better than yours.\nHave you not seen a person be healed? It happens all the time, people's legs that were cut off grow back!!! Can science explain that?
405935
god didn'give humans the ability to regrow arms maybe you should ask a star fish how they do that people just haven't evolved to that point maybe one day though it would require something big like people's arms easily coming off and we wouldn't want that so you should look into a robotic arm for him there are subsitutions for real arms
95856
Everyone who reproduces passes his/her genes on to future generations.  If you assume a population's birth and death rates are independent of light/dark skin genes then this means that whatever ratio is currently in place will stay that way.  (Also assume the population is isolated: no large fluxes of different ratios of phenotypes are coming in or leaving.)\n\nIf you ignore death rates, then populations grow exponentially.  This is characterized by a doubling time.  Say the doubling time is like 20 years (made up number) and your population of 100 individuals is 75 dark and 25 light.  If you wait 20 years then there will be 200 individuals: 150 dark skinned people and 50 light skinned people.  The ratios are still 75% and 25%.  The ratios will be constant whether or not different phenotypes reproduce with each other, too.  However, gene expression (dominant, recessive) could make the ratios look different on the outside (favoring the appearance of the dominant phenotype), but the actual gene ratios would still be constant.
349196
It is actually common that one arm is a different size than the other.  Body builders have this problem often and is one of the reasons they are graded on symmetry.  Any cardivascular excersize especially dancing works the largest muscles in the body which are the legs.  This releases hormones that promote muscle growth.  So you are probably predisposed to this genetically.  Especially if you are right handed.
151407
Functionally we have four fingers and a thumb. The thumb can do something the fingers can't, namely oppose (cross the palm). If someone loses (or is born without) a thumb, this is much more functionally significant than losing a finger, and in fact there is special surgery done to give such kids a functioning 'thumb' (moving the index finger).\n\nStructurally - well, the bones are basically the same, although the thumb attaches differently (to the wrist bones instead of to the metacarpals). The muscles are different (again, allowing for opposition.)\n\nI vote for four fingers and a thumb, i.e. five digits. :)
77006
Well, MY OPINION (as there is no scientific proof) would be that it is genetic.\n\nFace it, in a society where homosexuals are RIDICULED, would you choose to be gay?  \n\nAlso, do you CHOOSE to be heterosexual?  Do you CHOOSE to brown eyed? Left handed? 6ft tall?\n\nOh, and if they can prove that alcoholism is genetic (there is proof of this), why can't homosexuality be genetic?
194029
Where is the genetic revolution headed? Without question, it contains great potential for good in the form of better drugs, better medical care, and improved understanding of how living things work. But there is another side to the revolution.\n\n“We want perfect babies,” says Jeremy Rifkin. “We want perfect plants and animals. We want a better economy. There’s no evil intent here. The road to the Brave New World is paved with good intentions.\n\n“Step-by-step, we are deciding to engineer parts of the genetic code of living things. Two important questions emerge: If we’re going to engineer the genetic code, what criteria does this society establish for determining good and bad, useful and dysfunctional genes? And I would like to know whether there is an institution anyone here would trust with the ultimate authority to decide the genetic blueprints for a living thing?”\n\nThese are questions that deserve answers. Who is better equipped than the Creator of DNA to determine what is a good or a bad gene? He is the one who knows the innermost workings of the genetic code, as is shown by David at Psalm 139:13-16: “You kept me screened off in the belly of my mother. I shall laud you because in a fear-inspiring way I am wonderfully made. Your works are wonderful, as my soul is very well aware. My bones were not hidden from you when I was made in secret, when I was woven in the lowest parts of the earth. Your eyes saw even the embryo of me, and in your book all its parts were down in writing, as regards the days when they were formed and there was not yet one among them.” Would you not prefer to trust Him with the ultimate authority to decide the genetic blueprints for all living things?\n\nFor more info visit http://watchtower.org
190568
I wasn't satisfied with any of the above answers, so I thought I'd write my own:\n  For evolution to take place, people would have to die because of a certain trait..... for example, if more short people died in a certain generation, then the next generation would be slightly taller because there were less short people.  That's why people won't ever have 6 fingers... because why would people be able to survive better with 6 fingers than 5?  To evolve, you need death of a certain population.  \n  Humans have been able to control their environment and have used medicines to cure many diseases.  An interesting case of a type of evolution would be people in Africa with Sickled Cell Anemia (where red blood cells change shape into a half moon instead of round).  People that have one Sickled Cell allele, and one normal cell allele will have some normal red blood cells and some sickled.  Malaria can only attack normal red blood cells and so these people with both survived through Malaria.  Therefore, there will be more sickled cell alleles in that community because the people without them died.  That is why there are more cases of sickled cell anemia in african people.
516374
I think you are mixing up cause and effect here. Lifestyle eg how active you are etc comes from your genes not the other way around. If someone is fit, active, well educated they will be socially able to provide a good foundation for a child, but again this is nothing to do with genetics.
311350
Well, if we all woke up actually missing the genitalia then the world would be chaos. But if we woke up and had no memory of ever having them, things may be better. People wouldn't be concerned w/ who has bigger what. No rape or molestation. People would love you for you and not what you can give them physically. People would find better ways to spend their time. But of course it may be dumb unless there is a special way to get pregnant.
446345
I heard that, and I heard the same thing about Blue eyes.  Most reputable sources say it is wrong, but it seems to make sense to me.  Blonde hair and blue eyes are recessive traits and you'd think the dominant traits would eventually take over in the human race.  That's evolution, right? But who knows.  Science has been wrong before.
281297
Say it's a recessive gene.  Heterosexual parents without the expressed trait each contribute one allele.  Voila!  Gay kid from straight parents!  How does the recessive gene go on, you ask?  Siblings who only receive one allele.  (Do'h!)\n\nWell, there's one way of demonstrating flawed logic (or in your case, abysmal ignorance).