Heredity is the passing on of traits from one generation to another. Heritable traits are passed on from parents to their offspring via DNA. Heredity is responsible for genetic continuity from one generation to another and for genetic variations in a species. It is very important to learn the concepts that Gregor Mendel studied and founded ages ago. 

Reproduction- there are two main forms: sexual and asexual reproduction. In sexual reproduction, an organism combines the genetic information from each of its parents and is genetically unique. In asexual reproduction, one parent copies itself to form a genetically identical offspring. These two forms are responsible to the continuity of all living beings.

Mitosis is a process where a single cell divides into two identical daughter cells. Meiosis however, is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These two processes, especially meiosis, are the founding pillars of heredity itself.

Genetic disorders occur when a mutation (a harmful change to a gene, also known as a pathogenic variant) affects your genes or when you have the wrong amount of genetic material. When we study genetics, it is essential to study the diseases one can inherit as well.

When we study about sexual reproduction, we might notice that many variables are shared during the intercourse or the crossing over of male and female gametes. Humans suffer from diseases that can be transmitted during sexual intercourse and learning about them will help people avoid contraction.

Evolution is the process by which species adapt over time in response to their changing environment. Over the years, genetics could change due to many factors. The vague idea of evolution scares many, but it is something we can see in our everyday life over a long period of time. 

Autosomal hereditary diseases are diseases obtained from one or two mutations carried down to a person from his parents. The number of mutations needed for a person to be affected is a factor of dominant or recessive. Most common diseases can be linked to autosomal heredity, and therefore it is important to study these factors.

Sometimes certain diseases affect men more than women. Why is that? These types of diseases are most likely X-linked, and it is extremely essential to learn about them and know more about their effects.

Certain traits are more common than others, and this is all related to the type of genetic dominance. Learning about the genes responsible for our physical and genetic traits is essential to understand heredity in general.