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www.reference.com/science/genes-located-cac7a3c405d18fbd

Genes, which are segments of DNA acids, are found within the nuclei of cells in living organisms. Genes add specific proteins to chromosomes, which contain the basic genetic code for life. They contain the information needed to build the cells of a living organism and pass traits to offspring. Genes

www.reference.com/article/different-form-gene-b4a9c740a43dd157

Genes that occur at the same place on the chromosome but occur in different forms are called alleles. Alleles are essentially different versions of a gene, and they can cause dissimilarities in an organism's function or structure. An example is the gene responsible for melanin production in most ani

www.reference.com/science/causes-genetic-variation-7a8bc86774e1ec1d

Genetic variation is the result of mutation, gene flow between populations and sexual reproduction. In asexually reproducing organisms, some genetic variation may still result from random mutation.

www.reference.com/article/genetic-variation-fd74214c2b736c93

Genetic variation generally refers to the differences in genes between individual members of a population, or the frequency in which the various gene types are expressed. Genetic variation is incredibly important for the survival and adaptation of a species, as it helps in terms of natural selection

www.reference.com/science/genetic-variation-important-670d90b1826491ee

Genetic variation is important because a population has a better chance of surviving and flourishing than a population with limited genetic variation. Genetic diversity also decreases the occurrence of unfavorable inherited traits.

www.reference.com/science/many-genes-humans-ede876da5bee6447

While scientists have not arrived at a final number yet, as of 2014, estimates suggest that the number of protein-coding genes in the human genome could be as low as 19,000. Determining which genetic sequences are redundant or noncoding is arduous and complex, and there is still much disagreement.

www.reference.com/article/different-forms-gene-called-abd1e4595fd0b0a3

Different forms of the same gene are called alleles. A genetic locus is the spot on the chromosome where alleles for a specific gene can be found. Diploid organisms, including humans, have two alleles at each genetic locus because they inherit one allele from each parent.

www.reference.com/article/natural-variation-c6cacbed6f186cf1

Natural variations, also known as genetic variations, are mutations that randomly occur during sex cell division. These variations lead to different phenotypes that change an offspring's ability to survive and reach sexual maturity.

www.reference.com/business-finance/variation-order-30dcdacd0e7a7348

A variation order is a change, often in construction, that modifies all or part of an existing order. Many construction projects undergo changes, especially after the beginning of building, and the cost impact on a construction project with a variation order can be costly.

www.reference.com/article/call-different-versions-gene-8432a710ab3ebf13

Different versions of a gene are called "alleles" and are located in the same place on a chromosome. Humans inherit one allele from each parent and an allele can be dominant or recessive.