• Genetics Key Concepts

    SchoolCenter Picture

    • DNA is a double helix molecule.
    • DNA is a molecule that includes different components - sugars, nitrogenous bases, and phosphates. The arrangement of the nitrogenous bases within the double helix forms a chemical code.

    • Chromosomes are strands of tightly wound DNA. Genes are sections of a chromosome that carry the code for a particular trait.
    • The basic laws of Mendelian genetics explain the transmission of most traits that can be inherited from generation to generation.

    • Traits that are expressed through genes can be inherited. Characteristics that are acquired through environmental influences, such as injuries or practiced skills, cannot be inherited.

    • In genetic engineering, the genetic code is manipulated to obtain a desired product.

    • Genetic engineering has numerous practical applications in medicine, agriculture, and biology.

    • A series of contributions and discoveries led to the current level of genetic science.