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GENES EVOLUTION

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GENES EVOLUTION

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    1. GENES & EVOLUTION Genetic information – brain and body developed according to complex chemical instructions that were written in a human cell no larger than a grain of sand • Fertilization • Zygote • Chromosomes • Chemical alphabet • Genes and proteins • Genome • Genetic factors

    2. Fertilization – occurs when a sperm, which contains 23 chromosomes, penetrates an egg, which contains 23 chromosomes

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