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One set is inherited from the father, and one set is inherited from the mother. A DNA is a sort of a bio molecule. The entire DNA in cells can be found in individual pieces that are called chromosomes. The main difference between DNA and chromosome is regarding the role of genes. DNA stands for deoxyribonucleic acid. The DNA is basically made up of cytosine, adenine, thymine and guanine. When you arrange these four bases to create a particular segment, it is called a gene.
So basically a gene is a piece of genetic information, many of these pieces are bundled together into a chromosomes. And then all the chromosomes together are the genome. A gene is a distinct portion of a cell's DNA, encoding for something, often a protein. Genes are packaged in bundles called chromosomes. Humans have 23 pairs of chromosomes. The genome is the collection of all of life forms genetic material. So basically a gene is a piece of genetic information, many of these pieces are bundled together into a chromosomes. A gene is a distinct portion of a cell's DNA, encoding for something, often a protein.