Chapter 7 Mendelian Inheritance

Chapter 7 Mendelian Inheritance - Chapter 7 Mendelian...

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Chapter 7 Mendelian Inheritance 7.1 Family resemblance: your mother and father each contribute to your genetic makeup - 2 copies of a gene is called an allele *Offspring resemble their parents because they inherit genes 7.2 Some traits are controlled by a single gene - Heredity: The passing of characteristics from parents to offspring through their genes - Single-gene traits: Traits that are determined by the instructions a person carriers on one gene - More than 9,000 human traits - Traits exhibit straightforward patterns of inheritance 7.3 Mendel learned about heredity by conducting experiments Mendel… 1. Chose a good organism to study: the garden pea 2. Chose to focus on easily organized traits 3. Began his studies by first repeatedly breeding together similar plants until he had distinct populations 7.4 Segregation: you’ve got two copies of each gene but put only one copy in each sperm or egg - Dominant trait masks the effect of a recessive trait when an individual carries both the dominant and the recessive version of the instructions for the trait - Mendel’s predictions… 1. Each parents puts into every sperm or egg it makes a single set of instructions for building the trait, gene 2. Offspring receive two copies of the instruction for any trait
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Chapter 7 Mendelian Inheritance - Chapter 7 Mendelian...

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