What is the difference between genes and alleles?
111500
alleles are genes.  basically, different types of genes are alleles.  for example, everyone has a gene for hair color.  however, not everyone has the same allele for hair color.  come have the "brown allele" while others have the "black allele" and so on.  a simple way of picturing this is that genes are ice cream scoops and the alleles are the different flavors.
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.
594843
Recombination (I presume this is what you're talking about) can do both. It creates new combinations of alleles at different gene loci that might be especially advantageous in a particular environment. The down side is that it can separate them also, so a parent that has a good combination will produce some offspring that don't have the combination because recombination has separated them in the gametes.\n\nI hope this is what you were asking about.
1050884
well.. I'm not exactly sure how they use the term "values" but hopefuly I can point you in the right direction...\nAn allele is a specific configuration of nucleotide base pairs in your DNA.  Each gene has a variety of alleles and there could be an association of certain alleles to certain phenotypic expressions.  In a given population there may be for example a certain number of people all with the allele for dimples...  when they smile the dimples are present and when a person smiles and no dimples are present that means that they have a different allele of that gene.  The allele frequency is the likelyhood that a person is a population would have that allele and be expressing it. The "allele values" may be their way of presenting the percentages to you.. but then again, I may be way off... hope this helps though!
100049
Okay i never heard of the law of DNA but to answer the question.  If the condition of hair, straght or curly, is defined by a single gene, than there are two types.  The is a straight gene and a curly gene.  So everyone has two copies of the gene.  One from mom and one from dad.  So if mom gives a curly gene, and dad gives straight, which one will it be?  Well that is described by the law of domninance.  One gene will be stronger than the other.  One allele will out shine the other.  So you need to find out, which gene is dominant and which is recessive.  thats your answer
785844
Linked genes are inherited together because they are close together on the same chromosome, and thus are less likely to be separated by recombination.  Recombination refers to a process where chromosomes cross over each other and exchange DNA.  So if 2 genes are spread apart on a chromosome, they are more likely to be separated by recombination, and thus less likely to be inherited together.
722680
These enzymes usually display different kinetic parameters (i.e. different KM values), or different regulatory properties. The existence of isozymes permits the fine-tuning of metabolism to meet the particular needs of a given tissue or developmental stage (for example lactate dehydrogenase (LDH)). In biochemistry, isozymes (or isoenzymes) are isoforms (closely related variants) of enzymes. In many cases, they are coded for by homologous genes that have diverged over time. Although, strictly speaking, allozymes represent different alleles of the same gene, and isozymes represent different genes whose products catalyse the same reaction, the two words are usually used interchangeably.
182301
Alleles. Mutations are just general changes in the DNA, they do not necessarily have to be in a gene, therefore, not all mutations cause the creation of new alleles (ie if a mutation occurred in an area that did not code for anything)
745603
The expressed gene is the one that shows up.  I have brown hair, but say I have a gene for blonde hair and one for brown.  The expressed gene is brown.
632561
The DNA which carries genetic information in cells is normally packaged in the form of one or more large macromolecules called chromosomes.\n\nA chromosome, from the Greek χρώμα (color) and σώμα (body) is, minimally, a very long, continuous piece of DNA (a single DNA molecule), which contains many genes, regulatory elements and other intervening nucleotide sequences.
541120
There is no difference, dear, both mean the same thing.  It's a disease in your genetic code, which you inherited.
721353
He did not call it the "gene" he called it a "factor" He is the one and only Gregor Mendel!\n\nHere,\n\nGregor Mendel and Mendelian Genetics\n\nMendel\n\nGregor Johann Mendel was born on July 22, 1822 to peasant parents in a small agrarian town in Czechoslovakia. During his childhood he worked as a gardener, and as a young man attended the Olmutz Philosophical Institute. In 1843 he entered aAugustinian monastery in Brunn, Czechoslovakia.\n\nOlmutz Class He was later sent to the University of Vienna to study. By both his professors at University and his colleagues at the monastery, Mendel was inspired to study variance in plants. He commenced his study in his monastery's experimental garden. Between 1856 and 1863 Mendel cultivated and tested some 28,000 pea plants. His experiments brought forth two generalizations which later became known as Mendel's Laws of Heredity. Ironically, when Mendel's paper was published on 1866, it had little impact. It wasn't until the early 20th century that the enormity of hisideas was realized.\nMendel's Law of Segregation\n\nMendel's hypothesis essentially has four parts. The first states that "Alternative versions of genes account for variations in inherited characters." In a nutshell, this is the concept of alleles. Alleles are different versions of genes that impart the same characteristic. Each human has a gene that controls height, but there are variations among these genes in accordance with the specific height the gene "codes" for. The second, "For each character, an organism inherits two genes, one from each parent", alludes to the fact that when somatic cells are produced from two gametes, one allele comes from the mother, one from the father. These alleles may be the same (true-breeding organisms), or different (hybrids). The third law, in relation to the second, declares that, "If the two alleles differ, then one, the dominant allele, is fully expressed in the organism's appearance; the other, the recessive allele, has no noticeable effect on the organism's appearance." "The two genes for each character segregate during gamete production," is the last part of Mendel's generalization. This references meiosis when the chromosome count is changed from the diploid number to the haploid number. The genes are sorted into separate gametes, ensuring variation.\nMendel's Law of Independent Assortment\n\nThe most important principle of Mendel's Law of Independent Assortment is that the emergence of one trait will not effect the emergence of another. While his experiments mixing one trait always resulted in a 3:1 ratio between dominant and recessive phenotypes, his experiments with two traits showed 9:3:3:1 ratios. Mendel's findings allowed other scientists to simplify the emergence of traits to mathematical probability. A large portion of Mendel's spectacular findings can be traced to his proper usage of the scientific method. His choice of peas as a subject for his experiments is extraordinarily lucky. Peas have a relatively simple genetic structure. Also, Mendel could always be in control of the plants' breeding. When Mendel wanted to cross-pollinate a pea plant he needed only to remove the immature stamen of the plant. In this way he was always exactly sure of his plants' parents. Mendel made certain to start his experiments only with true breeding plants. He also only measured absolute characteristics such as color, shape, and position of the offspring. His data was expressed numerically and subjected to statistical analysis. This method of data reporting and the large sampling size he used gave credibility to his data. He also had the foresight to look through several successive generations of his pea plants and record their variations. Without his careful attention to procedure and detail, Mendel's work could not have had the impact it made on the world of g
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.
675315
Genes are the important functional units of our genome. There are somewhere between 60,000 and 100,000 genes in our genome, the actual number is not yet known (one benefit to be gained from the sequence of the entire genome). While the sequence of the genome will allow biologists to identify most of the genes, many people have been unwilling to wait the 5-7 years that it will take to sequence all our DNA. They have taken a shortcut.
292522
The term comes from oldish genetics vocabulary and it refers to the most common allele (in terms of proportion) for a given gene in a population. \nBefore modern population genetics research, it was believed that most genes (and associated characteristics) usually had one "normal" form (that would be the wild-type allele, present in most individuals) and another "mutant" form (the least common one). \nNow we know that natural populations are polymorphic (have usually several alleles) for any given gene, and there may be one or more than one more frequent alleles.
951713
Humans and grasshoppers have thousands of genes in common.  The elements needed for making life (protine manufacturing) is the same for all life forms.  The difference comes in the combinations od genes and their specific sequencing.  For example; humans have about 30,000 base pairs, if memory serves.
824039
Not sure if this will help but try the link below\n\nhttp://www.answers.com/topic/gene