Biology

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Genetics and evolution
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26

August 2024

2021/2022
Genetics and evolution are intimately connected, as genetic variations fuel the evolutionary process. Evolution acts on the genetic differences within populations, favoring individuals with advantageous traits and leading to their increased representation in future generations. As genetic information is passed down through generations, mutations, genetic drift, and gene flow introduce new variations, providing the raw material for evolution. Natural selection then shapes the distribution of thes...
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Evolution
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52

August 2024

2021/2022
Evolution is the scientifically supported theory that all species of life have developed from a common ancestor through a process of variation, mutation, genetic drift, and natural selection. Over time, these mechanisms have shaped the diversity of life on Earth, adapting species to their environments and leading to the vast array of complexity and variation we see today. Through fossil records, comparative anatomy, and molecular biology, the evidence for evolution is overwhelming, demonstrating...
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Principle of inheritance and variations.
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129

August 2024

2021/2022
The principles of inheritance, discovered by Gregor Mendel, explain how genetic traits are passed down from parents to offspring. The Law of Segregation states that each pair of alleles (different forms of a gene) separates during gamete formation, resulting in each offspring inheriting one allele from each parent. The Law of Independent Assortment states that different genes are sorted independently of each other during gamete formation, increasing genetic diversity. Additionally, the principle...
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