Lesson 1: The main principles of hereditary Introduction: What’s the reason for similarities of traits between family members? Genes are transferred from a generation to the next & the genes affect the traits of organisms. Key term; A trait is a distinct physical characteristic of an organism which is inherited ( got from the parents) or acquired ( determined by the environment ). Example; Eye color The color of the skin The number of fingers Blood groups The gene is heritable unit which is a portion of the chromosome.The gene influences the trait. The chromosome is a compact string of DNA. Mendel’s experiment: Gregor Mendel is the founder of heredity he conducted experiments on pea plants because : Pea plants are grown fast & easily. Their life cycle is short.
Lesson 1: The main principles of hereditary Introduction: What’s the reason for similarities of traits between family members? Genes are transferred from a generation to the next & the genes affect the traits of organisms. Key term; A trait is a distinct physical characteristic of an organism which is inherited ( got from the parents) or acquired ( determined by the environment ). Example; Eye color The color of the skin The number of fingers Blood groups The gene is heritable unit which is a portion of the chromosome.The gene influences the trait. The chromosome is a compact string of DNA. Mendel’s experiment: Gregor Mendel is the founder of heredity he conducted experiments on pea plants because : Pea plants are grown fast & easily. Their life cycle is short.
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