The following points highlight the six main types of genes. The types are: 1. Complementary Genes 2. Duplicate Genes 3. Polymeric Genes 4. Modifying Genes 5. Lethal Genes 6. Moveable Genes. Type # 1. Complementary Genes: Bateson and Punnett crossed two different white flowered varieties of sweet pea and obtained an F1 progeny of red flowered plants. On self-pollination the [...]
In this article we will discuss about the biochemical evidence that genes are made of DNA. Quantitative estimations of DNA carried out on various organisms revealed the following constant features, providing additional support for DNA as the genetic material: 1. The amount of DNA per cell in an organism or a given species is remarkably constant and cannot be altered [...]
After reading this article you will learn about the principle of independent assortment of genes. Independent assortment is defined as random distribution of alleles to the gametes that occurs when genes are located on different chromosomes. The distribution of one pair of alleles is independent of that of other genes located in non-homologous chromosomes. This principle, is as a matter [...]