Give examples of heredity and variability.

There are two types of human variability: Hereditary and non-hereditary. Let’s start with non-hereditary. Non-hereditary is the appearance of new traits, under the influence of certain external factors that do not affect the genotype. An example is oak and its foliage. Hereditary – associated with a change in the genotype, trait and properties that are acquired as a result of this, will be reflected in the next generation. There are 2 types of hereditary variability – combinative and mutational.