How Cells Reproduce. Chapter 7. DNA. DNA serves as a storehouse of information for living things. DNA contains a code to make proteins. DNA Terminology. Gene = physical unit of heredity; housed on a chromosome Made of DNA Human genome = 25,000 genes
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How Cells Reproduce
Interphase; preparation for cell division
Prophase, Metaphase, Anaphase, Telophase
Control of the cell cycle
The process generates genetic diversity by ensuring that the gametes formed are different from one another
The above indicates that even though the two homologous chromosomes contain the same genetic information, the assortment of the chromosomes (the order they lie in) can determine what genetic information is present in each of the 4 gametes produced. With 23 chromosomes in a human gamete, their are 223 combinations (8388608 combinations)