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The Human DNA have approximately between 20,000 and 25,000 genes according to the Human Genome Project.
What are Genes?
- The basic functional and structural unit of heredity is the gene. DNA is what makes up genes. Some genes serve as blueprints for the production of proteins.
- Each person is born with two copies of each gene, one from each parent.
- The majority of genes are identical in all persons, although a small number of genes (less than 1% of the total) deviate slightly.
- Alleles are variants of the same gene with minor changes in DNA base sequence.
- These minor variations add to each person's distinct physical characteristics.
- Genes in humans range in size from a few hundred to over 2 million DNA bases.
The Human Genome Project, an international research initiative aimed at determining the sequence of the human genome and identifying the genes it contains, concluded that humans had between 20,000 and 25,000 genes.
learn more about Human Genome Project here:
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