what couses the differences in the genes of the human bodies.?
409046
Well it's the will of God...\n\nBut scientifically speaking, there are lots of reasons:\n\n1. Through genetic recombination that occurs in the prophase I of meiotic division. One reason why we tend to inherit traits from both of our parents.\n\n2. Dominance and recessiveness of genes. Some genes may be apparent on a certain generation and some may not.\n\n3. genetic mutatio caused by radiation, drugs etc.\n4. Principle of evulotion and the theory of natural selection. Species with stronger genes most likely survives while species with weaker genes become extinct.
946006
They are different, one is general and the other is connected to the reproductive details in the DNA as per the explanation given by all the three preceding answerers. All of them are right in their own way so far as the scientific findings on the subject is concerned.
870015
genes, are made up of coded information. It is these codes or mutations of code that contain information that determine your characteristics.
623555
I don't know how helpful my answer will be, but i will keep it short. The real answer for this question will be in a Biology textbook. \nBasicly, Genes are sequences of chemical pairings in a protein called DNA, found in the Nucleus of all living cells. There are many parts of a gene, each consisting of segments of these pairs of chemicals. When a special protein called a ribosome 'reads' these sequences, it produces other chemicals, proteins and enzymes which regulate your body's functions. \nFor example, There is a gene in your body for the color of your hair. If you are a red-head, your genes code for the release of more red-pigment by your hair follicles. \nThis control can be exerted on anything. Chemicals regulated by genes can stimulate your hypothalmus in your brain, and, for example, make you grow taller, or regulate otehr body functions that affect how you look. \n\nIn your vegetable, a gene might encode for a chemical that prtects it from bacteria or fungus, possibly slowing the decaying process caused by these organisms.
1116861
Actually, all life shares DNA to some degree. While primates may have less differences than humans, only 5% of DNA is different in each species. The other 95% is shared by all life.
439187
Genes that are close together will tend to stay together after a cross-over. The distance between the genes will be roughly proportional to the frequency at which they are separated by cross-overs.
108939
One of the most obvious differences between the DNA of different species is the number of chromosomes.  If you have intact cells, you can do a DNA smash and stain and see how many chromosomes there are - for example dogs have 78 chromosomes, while humans have only 46.   Molecularly, there is no difference, besides a few genes which differ in sequence.
64866
The offspring of two humans is human. Until scientists declare that there is a homo superior intead of a homo sapien based on chromosome differences, there can be no other result.
726288
Genetic variation or differences would be the primary factor to give this question an explanation.  The same explanation that tells why there are different eye colors, different hair, different skin colors, etc. We inherit our blood type from our parents. Genes on our chromosomes tell the body what type of blood to make.\n\nThe types of proteins, glycoproteins and glycolipids found (or expressed) on the surface of red blood cells define blood types. In addition, blood types, or at least the genes responsible for them, are inherited. Karl Landsteiner described the original blood types - A, B and O - in 1900 and doctors now recognize 23 blood group systems with hundreds of different "types." Many of the blood type antigens (and the antibodies that react with them) have been discovered as a result of transfusion incompatibilities. Some of these molecules have additional functions that are at least as important as conferring compatibility (of lack of compatibility) on transfusion recipients. \n\nThere are four popularly known blood types: A, B, AB and O. These designations refer to the types of sugars (A, B and O) found on the surface of red blood cells. Everyone on the planet has an O sugar, and those who have no other type are known as blood group O. The other group names arise from the fact that some people have A, B or both A and B sugars attached to the O sugar.\n\nThe genetics is unusual in that there are two equally dominant alleles. If the gene from your mother is the recessive allele for producing O cell surface markers, and the gene from your father is for A cell surface markers, then your overall blood type is A. Why? Since everyone has O we only look at the second sugar present to determine blood type. If the gene from your mother was for B and the gene from your father was A, then your blood type would be AB. If both parents donated A alleles, then you would be A. And if both gave you recessive alleles then your blood type would be O.\n\n>> If we have the genes for the A antigen, we will make red blood cells that have A on them.\n>> If we inherit A antigen from both parents or A from one and neither A or B from the other we will have group A blood. \n>>If we inherit B antigen from both parents or B from one and neither A or B from the other we will have group B blood. \n>>If we inherit A antigen from one parent and B from the other we will have group AB blood. \n>>If we inherit neither antigen from both parents we will have group O blood. There is no O antigen. O is the result of not having any A or B. \n>>In addition to our blood group (A,B,AB,O) we can inherit the D antigen. D is more commonly know as the Rh type. This is what is called the positive or negative. Either we have it or we don't. \n>>If we inherit Rh antigen from both parents or Rh from one and not from the other we will have type positive blood. \n>>If we do not inherit the Rh antigen from either parent we will have type negative blood.\n\nThere is no much elaboration on non - ABO blood type as there is only a few who got any of the rare identified blood types.☺
824039
Not sure if this will help but try the link below\n\nhttp://www.answers.com/topic/gene
976258
Natural Selection.  Best bodies generally mean the best genes and increased chances at a healthy reproduction.
5940
The length of hair and all other aspects of cell growth and type of cell is based on DNA.\n\nDNA is the code of life. It also determines the specific characteristic of your family traits through Chromosomes passed on by your parents.
648356
genes, stress are the most common..
767384
Most of the cells in your body are identical in terms of genetic content (DNA/chromosomes).\n\nThe huge variety of cells is due to the fact that as we develop from a fertilized egg into an embryo and beyond, there are different signals passed around constantly that direct cells to divide and grow in certain ways such that a human being is the end result.  Throughout life, these "molecular instructions" are maintained so that our cells stay the proper type.  (Sometimes, improper maintenance of these directions can lead to cancer.)\n\nExpression of genes (that is, transcription from DNA to mRNA, and then translation to protein) will of course dictate how the process goes.  Different proteins exist in each different cell type due to variable expression.
708612
The question is too general.  It depends on what type of gene you are asking about.  For gene related to human diseases, one most likely will need to study patient population with the disease and consider are the gene(s) playing equal role in different patients.  Human diseases often involve many genes and they are likely involved in a common pathway for example.  Defect in any component of a pathway may generate the same disease phenotype.  \n\nIf there is a great animal model for the human disease, investigators will likely use the model to determine disease gene.  However, very often the gene affected in animals is not exactly the same that causes problem in human.  \n\nIf, however, you mean gene of interest in a bacteria, the ball game is quite different.  It is much more easy to work with simple organism.  One can isolate mutants affecting the gene of interest.
457126
it depends on your genes
1066004
You'll have to be more specific as to which chemicals you want to know about.  The building blocks of Genes are Organic Structures / chemicals as are the individual nucleic acids and nitrogenous bases.     \n\nPlease see my sources for more information.