What is a gene? the different forms of a trait a segment of dna that is the basic unit of heredity the appearance or characteristics that are seen in an organism an organism's allele combination

A gene is a segment of DNA that is the basic unit of heredity.

A gene in molecular biology and in genetics indicates the fundamental hereditary unit of living organisms.

The genes correspond to portions of the genome located in precise positions within the DNA sequence and contain the information necessary to ultimately encode molecules that have a function, such as RNA or proteins. During the reproductive phase of the cell the genes are present in the chromosomes, which in human cells are present in 23 pairs of homologous chromosomes, with the sole exception of the gametes, which present a single copy of each chromosome.

A gene is an information unit in a locus of deoxyribonucleic acid (DNA) that encodes a functional product, proteins for example. It is the molecular unit of genetic inheritance, because it stores genetic information and allows transmitting to offspring. The genes are found in the chromosomes, and each occupies a correct position called a locus. The set of genes of a species is called a genome.

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