Explain Genes and Chromosomes.
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The hereditary material (characteristics) which passes from a parent to child is gene.
There are 23 pair of chromosomes in humans.
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A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins.
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA).
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