The following points highlight the top three characters which are not heritable among animals. The characters are: 1. Acquired Modifications due to Disease 2. Characters Peculiar to Sex 3. Certain Parental Characteristics. Character # 1. Acquired Modifications due to Disease: Acquired modifications due to disease mutilation, use or disuse of parts, and changes due to the direct action of the [...]
The different types of genes so far considered to be present and affecting the phenotypes of eukaryotes are: 1. Lethal Genes 2. Complementary Genes 3. Supplementary Genes 4. Inhibiting Genes 5. Duplicate Genes 6. Cumulative Genes 7. Collaborative Genes. Type # 1. Lethal Genes: The genes which are known to control the manifestation of some phenotype traits as well as [...]
In this article we will discuss about the physical basis of heredity with theories investigated by a great number of workers, some of whose results are as follows: Encasement Theory: One of the older, but now abandoned, ideas was set forth in the preformation or encasement theory, which supposed that the germs of all future generation were encased one within [...]